diff options
Diffstat (limited to 'nGenEx/Font.cpp')
-rw-r--r-- | nGenEx/Font.cpp | 2486 |
1 files changed, 1255 insertions, 1231 deletions
diff --git a/nGenEx/Font.cpp b/nGenEx/Font.cpp index dd04112..83f0430 100644 --- a/nGenEx/Font.cpp +++ b/nGenEx/Font.cpp @@ -1,1231 +1,1255 @@ -/* Project nGenEx
- Destroyer Studios LLC
- Copyright © 1997-2004. All Rights Reserved.
-
- SUBSYSTEM: nGenEx.lib
- FILE: Font.cpp
- AUTHOR: John DiCamillo
-
-
- OVERVIEW
- ========
- Font Resource class implementation
-*/
-
-#include "MemDebug.h"
-#include "Font.h"
-#include "Polygon.h"
-#include "Bitmap.h"
-#include "DataLoader.h"
-#include "ParseUtil.h"
-#include "Video.h"
-
-DWORD GetRealTime();
-
-// +--------------------------------------------------------------------+
-
-Font::Font()
-: flags(0), height(0), baseline(0), interspace(0), spacewidth(0),
-imagewidth(0), image(0), expansion(0), alpha(1), blend(Video::BLEND_ALPHA),
-scale(1), material(0), vset(0), polys(0), npolys(0),
-caret_index(-1), caret_x(0), caret_y(0), tgt_bitmap(0)
-{
- ZeroMemory(name, sizeof(name));
- ZeroMemory(glyph, sizeof(glyph));
- ZeroMemory(kern, sizeof(kern));
-}
-
-Font::Font(const char* n)
-: flags(0), height(0), baseline(0), interspace(0), spacewidth(4),
-imagewidth(0), image(0), expansion(0), alpha(1), blend(Video::BLEND_ALPHA),
-scale(1), material(0), vset(0), polys(0), npolys(0),
-caret_index(-1), caret_x(0), caret_y(0), tgt_bitmap(0)
-{
- ZeroMemory(glyph, sizeof(glyph));
- ZeroMemory(kern, sizeof(kern));
- CopyMemory(name, n, sizeof(name));
-
- if (!Load(name)) {
- flags = 0;
- height = 0;
- baseline = 0;
- interspace = 0;
- spacewidth = 0;
- imagewidth = 0;
- image = 0;
-
- ZeroMemory(glyph, sizeof(glyph));
- ZeroMemory(kern, sizeof(kern));
- }
-}
-
-// +--------------------------------------------------------------------+
-
-Font::~Font()
-{
- if (image) delete [] image;
- if (vset) delete vset;
- if (polys) delete [] polys;
- if (material) delete material;
-}
-
-// +--------------------------------------------------------------------+
-
-static char kern_tweak[256][256];
-
-bool
-Font::Load(const char* name)
-{
- if (!name || !name[0])
- return false;
-
- char imgname[256];
- char defname[256];
- wsprintf(defname, "%s.def", name);
- wsprintf(imgname, "%s.pcx", name);
-
- DataLoader* loader = DataLoader::GetLoader();
- if (!loader)
- return false;
-
- LoadDef(defname, imgname);
-
- for (int i = 0; i < 256; i++) {
- glyph[i].offset = GlyphOffset(i);
- glyph[i].width = 0;
- }
-
- if (loader->LoadBitmap(imgname, bitmap)) {
- if (!bitmap.Pixels() && !bitmap.HiPixels())
- return false;
-
- scale = bitmap.Width() / 256;
- imagewidth = bitmap.Width();
- if (height > bitmap.Height())
- height = bitmap.Height();
-
- int imgsize = bitmap.Width() * bitmap.Height();
- image = new(__FILE__,__LINE__) BYTE[imgsize];
-
- if (image) {
- if (bitmap.Pixels()) {
- CopyMemory(image, bitmap.Pixels(), imgsize);
- }
-
- else {
- for (int i = 0; i < imgsize; i++)
- image[i] = (BYTE) bitmap.HiPixels()[i].Alpha();
- }
- }
-
- material = new(__FILE__,__LINE__) Material;
- material->tex_diffuse = &bitmap;
- }
- else {
- return false;
- }
-
- for (int i = 0; i < 256; i++) {
- glyph[i].width = CalcWidth(i);
- }
-
- color = Color::White;
-
- if (!(flags & (FONT_FIXED_PITCH | FONT_NO_KERN)))
- AutoKern();
-
- for (int i = 0; i < 256; i++) {
- for (int j = 0; j < 256; j++) {
- if (kern_tweak[i][j] < 100) {
- kern[i][j] = kern_tweak[i][j];
- }
- }
- }
-
- return true;
-}
-
-void
-Font::LoadDef(char* defname, char* imgname)
-{
- for (int i = 0; i < 256; i++)
- for (int j = 0; j < 256; j++)
- kern_tweak[i][j] = 111;
-
- DataLoader* loader = DataLoader::GetLoader();
- if (!loader)
- return;
-
- BYTE* block;
- int blocklen = loader->LoadBuffer(defname, block, true);
-
- if (!block || blocklen < 4)
- return;
-
- Parser parser(new(__FILE__,__LINE__) BlockReader((const char*) block, blocklen));
- Term* term = parser.ParseTerm();
-
- if (!term) {
- Print("WARNING: could not parse '%s'\n", defname);
- return;
- }
- else {
- TermText* file_type = term->isText();
- if (!file_type || file_type->value() != "FONT") {
- Print("WARNING: invalid font def file '%s'\n", defname);
- return;
- }
- }
-
- do {
- delete term;
-
- term = parser.ParseTerm();
-
- if (term) {
- TermDef* def = term->isDef();
- if (def) {
- if (def->name()->value().indexOf("image") == 0) {
- GetDefText(imgname, def, defname);
- }
-
- else if (def->name()->value() == "height") {
- int h=0;
- GetDefNumber(h, def, defname);
-
- if (h >= 0 && h <= 32)
- height = (BYTE) h;
- }
-
- else if (def->name()->value() == "baseline") {
- int b=0;
- GetDefNumber(b, def, defname);
-
- if (b >= 0 && b <= 32)
- baseline = (BYTE) b;
- }
-
- else if (def->name()->value() == "flags") {
- if (def->term()->isText()) {
- Text buf;
- GetDefText(buf, def, defname);
- buf.setSensitive(false);
-
- flags = 0;
-
- if (buf.contains("caps"))
- flags = flags | FONT_ALL_CAPS;
-
- if (buf.contains("kern"))
- flags = flags | FONT_NO_KERN;
-
- if (buf.contains("fixed"))
- flags = flags | FONT_FIXED_PITCH;
- }
-
- else {
- int f=0;
- GetDefNumber(f, def, defname);
- flags = (WORD) f;
- }
- }
-
- else if (def->name()->value() == "interspace") {
- int n=0;
- GetDefNumber(n, def, defname);
-
- if (n >= 0 && n <= 100)
- interspace = (BYTE) n;
- }
-
- else if (def->name()->value() == "spacewidth") {
- int n=0;
- GetDefNumber(n, def, defname);
-
- if (n >= 0 && n <= 100)
- spacewidth = (BYTE) n;
- }
-
- else if (def->name()->value() == "expansion") {
- GetDefNumber(expansion, def, defname);
- }
-
- else if (def->name()->value() == "kern") {
- TermStruct* val = def->term()->isStruct();
-
- char a[8], b[8];
- int k=111;
-
- a[0] = 0;
- b[0] = 0;
-
- for (int i = 0; i < val->elements()->size(); i++) {
- TermDef* pdef = val->elements()->at(i)->isDef();
- if (pdef) {
- if (pdef->name()->value() == "left" || pdef->name()->value() == "a")
- GetDefText(a, pdef, defname);
-
- else if (pdef->name()->value() == "right" || pdef->name()->value() == "b")
- GetDefText(b, pdef, defname);
-
- else if (pdef->name()->value() == "kern" || pdef->name()->value() == "k")
- GetDefNumber(k, pdef, defname);
- }
- }
-
- if (k < 100)
- kern_tweak[a[0]][b[0]] = k;
- }
-
- else {
- Print("WARNING: unknown object '%s' in '%s'\n",
- def->name()->value().data(), defname);
- }
- }
- else {
- Print("WARNING: term ignored in '%s'\n", defname);
- term->print();
- }
- }
- }
- while (term);
-
- loader->ReleaseBuffer(block);
-
-}
-
-// +--------------------------------------------------------------------+
-
-static const int pipe_width = 16;
-static const int char_width = 16;
-static const int char_height = 16;
-static const int row_items = 16;
-static const int row_width = row_items * char_width;
-static const int row_size = char_height * row_width;
-
-int
-Font::GlyphOffset(BYTE c) const
-{
- if (flags & FONT_ALL_CAPS)
- if (islower(c))
- c = toupper(c);
-
- return (c/row_items * row_size * scale * scale +
- c%row_items * char_width * scale);
-}
-
-int
-Font::GlyphLocationX(BYTE c) const
-{
- if (flags & FONT_ALL_CAPS)
- if (islower(c))
- c = toupper(c);
-
- return c%row_items * char_width;
-}
-
-int
-Font::GlyphLocationY(BYTE c) const
-{
- if (flags & FONT_ALL_CAPS)
- if (islower(c))
- c = toupper(c);
-
- return c/row_items * char_height;
-}
-
-// +--------------------------------------------------------------------+
-
-int
-Font::CalcWidth(BYTE c) const
-{
- if (c >= PIPE_NBSP && c <= ARROW_RIGHT)
- return pipe_width;
-
- if (c >= 128 || !image)
- return 0;
-
- // all digits should be same size:
- if (isdigit(c))
- c = '0';
-
- int result = 0;
- int w = 16 * scale;
- int h = 16 * scale;
-
- BYTE* src = image + GlyphOffset(c);
-
- for (int y = 0; y < h; y++) {
- BYTE* pleft = src;
-
- for (int x = 0; x < w; x++) {
- if (*pleft++ > 0 && x > result)
- result = x;
- }
-
- src += imagewidth;
- }
-
- return result + 2;
-}
-
-// +--------------------------------------------------------------------+
-
-struct FontKernData
-{
- double l[32];
- double r[32];
-};
-
-void
-Font::FindEdges(BYTE c, double* l, double* r)
-{
- if (!image)
- return;
-
- int w = glyph[c].width;
- int h = height;
-
- if (h > 32)
- h = 32;
-
- BYTE* src = image + GlyphOffset(c);
-
- for (int y = 0; y < h; y++) {
- BYTE* pleft = src;
- BYTE* pright = src+w-1;
-
- *l = -1;
- *r = -1;
-
- for (int x = 0; x < w; x++) {
- if (*l == -1 && *pleft != 0)
- *l = x + 1 - (double) *pleft/255.0;
- if (*r == -1 && *pright != 0)
- *r = x + 1 - (double) *pright/255.0;
-
- pleft++;
- pright--;
- }
-
- src += imagewidth;
- l++;
- r++;
- }
-}
-
-static bool nokern(char c)
-{
- if (c <= Font::ARROW_RIGHT)
- return true;
-
- const char* nokernchars = "0123456789+=<>-.,:;?'\"";
-
- if (strchr(nokernchars, c))
- return true;
-
- return false;
-}
-
-void
-Font::AutoKern()
-{
- FontKernData* data = new(__FILE__,__LINE__) FontKernData[256];
-
- if (!data)
- return;
-
- int h = height;
- if (h > 32) h = 32;
-
- int i, j;
-
- // first, compute row edges for each glyph:
-
- for (i = 0; i < 256; i++) {
- ZeroMemory(&data[i], sizeof(FontKernData));
-
- char c = i;
-
- if ((flags & FONT_ALL_CAPS) && islower(c))
- c = toupper(c);
-
- if (glyph[(BYTE) c].width > 0) {
- FindEdges((BYTE) c, data[i].l, data[i].r);
- }
- }
-
- // then, compute the appropriate kern for each pair.
- // use a desired average distance of one pixel,
- // with a desired minimum distance of more than half a pixel:
-
- double desired_avg = 2.5 + expansion;
- double desired_min = 1;
-
- for (i = 0; i < 256; i++) {
- for (j = 0; j < 256; j++) {
- // no kerning between digits or dashes:
- if (nokern(i) || nokern(j)) {
- kern[i][j] = (char) 0;
- }
-
- else {
- double delta = 0;
- double avg = 0;
- double min = 2500;
- int n = 0;
-
- for (int y = 0; y < h; y++) {
- if (data[i].r[y] >= 0 && data[j].l[y] >= 0) {
- delta = data[i].r[y] + data[j].l[y];
- avg += delta;
- if (delta < min)
- min = delta;
-
- n++;
- }
- }
-
- if (n > 0) {
- avg /= n;
-
- delta = desired_avg - avg;
-
- if (delta < desired_min - min) {
- delta = ceil(desired_min - min);
-
- if (i == 'T' && islower(j) && !(flags & FONT_ALL_CAPS))
- delta += 1;
- }
- }
- else {
- delta = 0;
- }
-
- kern[i][j] = (char) delta;
- }
- }
- }
-
- delete [] data;
-}
-
-// +--------------------------------------------------------------------+
-
-int
-Font::CharWidth(char c) const
-{
- if (flags & FONT_ALL_CAPS)
- if (islower(c))
- c = toupper(c);
-
- int result = 0;
-
- if (c >= PIPE_NBSP && c <= ARROW_RIGHT)
- result = pipe_width;
-
- else if (c < 0 || isspace(c))
- result = spacewidth;
-
- else
- result = glyph[c].width + interspace;
-
- return result;
-}
-
-int
-Font::SpaceWidth() const
-{
- return spacewidth;
-}
-
-int
-Font::KernWidth(char a, char b) const
-{
- if (flags & FONT_ALL_CAPS) {
- if (islower(a)) a = toupper(a);
- if (islower(b)) b = toupper(b);
- }
-
- return kern[a][b];
-}
-
-void
-Font::SetKern(char a, char b, int k)
-{
- if (k < -100 || k > 100)
- return;
-
- if (flags & FONT_ALL_CAPS) {
- if (islower(a)) a = toupper(a);
- if (islower(b)) b = toupper(b);
- }
-
- kern[a][b] = (char) k;
-}
-
-// +--------------------------------------------------------------------+
-
-int
-Font::StringWidth(const char* str, int len) const
-{
- int result = 0;
-
- if (!str)
- return result;
-
- if (!len)
- len = strlen(str);
-
- const char* c = str;
- for (int i = 0; i < len; i++) {
- if (isspace(*c) && (*c < PIPE_NBSP || *c > ARROW_RIGHT))
- result += spacewidth;
- else {
- int cc = *c;
- if (flags & FONT_ALL_CAPS)
- if (islower(cc))
- cc = toupper(cc);
-
- int k = 0;
- if (i < len-1)
- k = kern[cc][str[i+1]];
-
- result += glyph[cc].width + interspace + k;
- }
- c++;
- }
-
- return result;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Font::DrawText(const char* text, int count, Rect& text_rect, DWORD flags, Bitmap* tgt)
-{
- Rect clip_rect = text_rect;
-
- if (clip_rect.w < 1 || clip_rect.h < 1)
- return;
-
- tgt_bitmap = tgt;
-
- if (text && text[0]) {
- if (count < 1)
- count = strlen(text);
-
- // single line:
- if (flags & DT_SINGLELINE) {
- DrawTextSingle(text, count, text_rect, clip_rect, flags);
- }
-
- // multi-line with word wrap:
- else if (flags & DT_WORDBREAK) {
- DrawTextWrap(text, count, text_rect, clip_rect, flags);
- }
-
- // multi-line with clip:
- else {
- DrawTextMulti(text, count, text_rect, clip_rect, flags);
- }
- }
- else {
- caret_x = text_rect.x + 2;
- caret_y = text_rect.y + 2;
- }
-
- // if calc only, update the rectangle:
- if (flags & DT_CALCRECT) {
- text_rect.h = clip_rect.h;
- text_rect.w = clip_rect.w;
- }
-
- // otherwise, draw caret if requested:
- else if (caret_index >= 0 && caret_y >= text_rect.y && caret_y <= text_rect.y + text_rect.h) {//caret_y + height < text_rect.y + text_rect.h) {
- Video* video = Video::GetInstance();
-
- if (video && (GetRealTime() / 500) & 1) {
- float v[4];
- v[0] = (float) (caret_x + 1);
- v[1] = (float) (caret_y);
- v[2] = (float) (caret_x + 1);
- v[3] = (float) (caret_y + height);
-
- video->DrawScreenLines(1, v, color, blend);
- }
-
- caret_index = -1;
- }
-
- tgt_bitmap = 0;
-}
-
-// +--------------------------------------------------------------------+
-
-static int find_next_word_start(const char* text, int index)
-{
- // step through intra-word space:
- while (text[index] && isspace(text[index]) && text[index] != '\n')
- index++;
-
- return index;
-}
-
-static int find_next_word_end(const char* text, int index)
-{
- if (index < 0)
- return index;
-
- // check for leading newline:
- if (text[index] == '\n')
- return index;
-
- // step through intra-word space:
- while (text[index] && isspace(text[index]))
- index++;
-
- // step through word:
- while (text[index] && !isspace(text[index]))
- index++;
-
- return index-1;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Font::DrawTextSingle(const char* text, int count, const Rect& text_rect, Rect& clip_rect, DWORD flags)
-{
- // parse the format flags:
- bool nodraw = (flags & DT_CALCRECT) ?true:false;
-
- int align = DT_LEFT;
- if (flags & DT_RIGHT)
- align = DT_RIGHT;
- else if (flags & DT_CENTER)
- align = DT_CENTER;
-
- int max_width = 0;
-
- int valign = DT_TOP;
- if (flags & DT_BOTTOM) valign = DT_BOTTOM;
- else if (flags & DT_VCENTER) valign = DT_VCENTER;
-
- int xoffset = 0;
- int yoffset = 0;
-
- int length = StringWidth(text, count);
- if (length < text_rect.w) {
- switch (align) {
- default:
- case DT_LEFT: break;
- case DT_RIGHT: xoffset = text_rect.w - length; break;
- case DT_CENTER: xoffset = (text_rect.w - length)/2; break;
- }
- }
-
- if (Height() < text_rect.h) {
- switch (valign) {
- default:
- case DT_TOP: break;
- case DT_BOTTOM: yoffset = text_rect.h - Height(); break;
- case DT_VCENTER: yoffset = (text_rect.h - Height())/2; break;
- }
- }
-
- max_width = length;
-
- // if calc only, update the rectangle:
- if (nodraw) {
- clip_rect.h = Height();
- clip_rect.w = max_width;
- }
-
- // otherwise, draw the string now:
- else {
- int x1 = text_rect.x + xoffset;
- int y1 = text_rect.y + yoffset;
-
- DrawString(text, count, x1, y1, text_rect);
- }
-
- if (caret_index >= 0 && caret_index <= count) {
- caret_x = text_rect.x + xoffset;
- caret_y = text_rect.y + yoffset;
-
- if (caret_index > 0)
- caret_x += StringWidth(text, caret_index);
- }
-
- else {
- caret_x = text_rect.x + 0;
- caret_y = text_rect.y + 0;
- }
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Font::DrawTextWrap(const char* text, int count, const Rect& text_rect, Rect& clip_rect, DWORD flags)
-{
- // parse the format flags:
- bool nodraw = (flags & DT_CALCRECT) ?true:false;
-
- int align = DT_LEFT;
- if (flags & DT_RIGHT)
- align = DT_RIGHT;
- else if (flags & DT_CENTER)
- align = DT_CENTER;
-
- int nlines = 0;
- int max_width = 0;
-
- int line_start = 0;
- int line_count = 0;
- int count_remaining = count;
- int curr_word_end = -1;
- int next_word_end = 0;
- int eol_index = 0;
-
- int xoffset = 0;
- int yoffset = 0;
-
- caret_x = -1;
- caret_y = -1;
-
- // repeat for each line of text:
- while (count_remaining > 0) {
- int length = 0;
-
- // find the end of the last whole word that fits on the line:
- for (;;) {
- next_word_end = find_next_word_end(text, curr_word_end+1);
-
- if (next_word_end < 0 || next_word_end == curr_word_end)
- break;
-
- if (text[next_word_end] == '\n') {
- eol_index = curr_word_end = next_word_end;
- break;
- }
-
- int word_len = next_word_end - line_start + 1;
-
- length = StringWidth(text+line_start, word_len);
-
- if (length < text_rect.w) {
- curr_word_end = next_word_end;
-
- // check for a newline in the next block of white space:
- eol_index = 0;
- const char* eol = &text[curr_word_end+1];
- while (*eol && isspace(*eol) && *eol != '\n')
- eol++;
-
- if (*eol == '\n') {
- eol_index = eol - text;
- break;
- }
- }
- else
- break;
- }
-
- line_count = curr_word_end - line_start + 1;
-
- if (line_count > 0) {
- length = StringWidth(text+line_start, line_count);
- }
-
- // there was a single word longer than the entire line:
- else {
- line_count = next_word_end - line_start + 1;
- length = StringWidth(text+line_start, line_count);
- curr_word_end = next_word_end;
- }
-
- xoffset = 0;
- if (length < text_rect.w) {
- switch (align) {
- default:
- case DT_LEFT: break;
- case DT_RIGHT: xoffset = text_rect.w - length; break;
- case DT_CENTER: xoffset = (text_rect.w - length)/2; break;
- }
- }
-
- if (length > max_width) max_width = length;
-
- if (eol_index > 0)
- curr_word_end = eol_index;
-
- int next_line_start = find_next_word_start(text, curr_word_end+1);
-
- if (length > 0 && !nodraw) {
- int x1 = text_rect.x + xoffset;
- int y1 = text_rect.y + yoffset;
-
- DrawString(text+line_start, line_count, x1, y1, text_rect);
-
- if (caret_index == line_start) {
- caret_x = x1 - 2;
- caret_y = y1;
- }
- else if (caret_index > line_start && caret_index < next_line_start) {
- caret_x = text_rect.x + xoffset + StringWidth(text+line_start, caret_index-line_start) - 2;
- caret_y = text_rect.y + yoffset;
- }
- else if (caret_index == count) {
- if (text[count-1] == '\n') {
- caret_x = x1 - 2;
- caret_y = y1 + height;
- }
- else {
- caret_x = text_rect.x + xoffset + StringWidth(text+line_start, caret_index-line_start) - 2;
- caret_y = text_rect.y + yoffset;
- }
- }
- }
-
- nlines++;
- yoffset += Height();
- if (eol_index > 0)
- curr_word_end = eol_index;
- line_start = find_next_word_start(text, curr_word_end+1);
- count_remaining = count - line_start;
- }
-
- // if calc only, update the rectangle:
- if (nodraw) {
- clip_rect.h = nlines * Height();
- clip_rect.w = max_width;
- }
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Font::DrawTextMulti(const char* text, int count, const Rect& text_rect, Rect& clip_rect, DWORD flags)
-{
- // parse the format flags:
- bool nodraw = (flags & DT_CALCRECT) ?true:false;
-
- int align = DT_LEFT;
- if (flags & DT_RIGHT)
- align = DT_RIGHT;
- else if (flags & DT_CENTER)
- align = DT_CENTER;
-
- int max_width = 0;
- int line_start = 0;
- int count_remaining = count;
-
- int xoffset = 0;
- int yoffset = 0;
- int nlines = 0;
-
- // repeat for each line of text:
- while (count_remaining > 0) {
- int length = 0;
- int line_count = 0;
-
- // find the end of line:
- while (line_count < count_remaining) {
- char c = text[line_start+line_count];
- if (!c || c == '\n')
- break;
-
- line_count++;
- }
-
- if (line_count > 0) {
- length = StringWidth(text+line_start, line_count);
- }
-
- xoffset = 0;
- if (length < text_rect.w) {
- switch (align) {
- default:
- case DT_LEFT: break;
- case DT_RIGHT: xoffset = text_rect.w - length; break;
- case DT_CENTER: xoffset = (text_rect.w - length)/2; break;
- }
- }
-
- if (length > max_width) max_width = length;
-
- if (length && !nodraw) {
- int x1 = text_rect.x + xoffset;
- int y1 = text_rect.y + yoffset;
-
- DrawString(text+line_start, line_count, x1, y1, text_rect);
- }
-
- nlines++;
- yoffset += Height();
-
- if (line_start+line_count+1 < count) {
- line_start = find_next_word_start(text, line_start+line_count+1);
- count_remaining = count - line_start;
- }
- else {
- count_remaining = 0;
- }
- }
-
- // if calc only, update the rectangle:
- if (nodraw) {
- clip_rect.h = nlines * Height();
- clip_rect.w = max_width;
- }
-}
-
-// +--------------------------------------------------------------------+
-
-int
-Font::DrawString(const char* str, int len, int x1, int y1, const Rect& clip, Bitmap* tgt)
-{
- Video* video = Video::GetInstance();
- int count = 0;
- int maxw = clip.w;
- int maxh = clip.h;
-
- if (len < 1 || !video)
- return count;
-
- // vertical clip
- if ((y1 < clip.y) || (y1 > clip.y + clip.h))
- return count;
-
- // RENDER TO BITMAP
-
- if (!tgt)
- tgt = tgt_bitmap;
-
- if (tgt) {
- for (int i = 0; i < len; i++) {
- char c = str[i];
-
- if ((flags & FONT_ALL_CAPS) && islower(c))
- c = toupper(c);
-
- int cw = glyph[c].width + interspace;
- int ch = height;
- int k = 0;
-
- if (i < len-1)
- k = kern[c][str[i+1]];
-
- // horizontal clip:
- if (x1 < clip.x) {
- if (isspace(c) && (c < PIPE_NBSP || c > ARROW_RIGHT)) {
- x1 += spacewidth;
- maxw -= spacewidth;
- }
- else {
- x1 += cw+k;
- maxw -= cw+k;
- }
- }
- else if (x1+cw > clip.x+clip.w) {
- return count;
- }
- else {
- if (isspace(c) && (c < PIPE_NBSP || c > ARROW_RIGHT)) {
- x1 += spacewidth;
- maxw -= spacewidth;
- }
- else {
- int sx = GlyphLocationX(c);
- int sy = GlyphLocationY(c);
-
- Color* srcpix = bitmap.HiPixels();
- Color* dstpix = tgt->HiPixels();
- if (srcpix && dstpix) {
- int spitch = bitmap.Width();
- int dpitch = tgt->Width();
-
- Color* dst = dstpix + (y1*dpitch) + x1;
- Color* src = srcpix + (sy*spitch) + sx;
-
- for (int i = 0; i < ch; i++) {
- Color* ps = src;
- Color* pd = dst;
-
- for (int n = 0; n < cw; n++) {
- DWORD alpha = ps->Alpha();
- if (alpha) {
- *pd = color.dim(alpha / 240.0);
- }
- ps++;
- pd++;
- }
-
- dst += dpitch;
- src += spitch;
- }
- }
- else {
- // this probably won't work...
- tgt->BitBlt(x1, y1, bitmap, sx, sy, cw, ch, true);
- }
-
- x1 += cw + k;
- maxw -= cw + k;
- }
-
- count++;
- }
- }
- return count;
- }
-
- // RENDER TO VIDEO
-
- // allocate verts, if necessary
- int nverts = 4*len;
- if (!vset) {
- vset = new(__FILE__,__LINE__) VertexSet(nverts);
-
- if (!vset)
- return false;
-
- vset->space = VertexSet::SCREEN_SPACE;
-
- for (int v = 0; v < vset->nverts; v++) {
- vset->s_loc[v].z = 0.0f;
- vset->rw[v] = 1.0f;
- }
- }
- else if (vset->nverts < nverts) {
- vset->Resize(nverts);
-
- for (int v = 0; v < vset->nverts; v++) {
- vset->s_loc[v].z = 0.0f;
- vset->rw[v] = 1.0f;
- }
- }
-
- if (vset->nverts < nverts)
- return count;
-
- if (alpha < 1)
- color.SetAlpha((BYTE) (alpha * 255.0f));
- else
- color.SetAlpha(255);
-
- for (int i = 0; i < len; i++) {
- char c = str[i];
-
- if ((flags & FONT_ALL_CAPS) && islower(c))
- c = toupper(c);
-
- int cw = glyph[c].width + interspace;
- int k = 0;
-
- if (i < len-1)
- k = kern[c][str[i+1]];
-
- // horizontal clip:
- if (x1 < clip.x) {
- if (isspace(c) && (c < PIPE_NBSP || c > ARROW_RIGHT)) {
- x1 += spacewidth;
- maxw -= spacewidth;
- }
- else {
- x1 += cw+k;
- maxw -= cw+k;
- }
- }
- else if (x1+cw > clip.x+clip.w) {
- break;
- }
- else {
- if (isspace(c) && (c < PIPE_NBSP || c > ARROW_RIGHT)) {
- x1 += spacewidth;
- maxw -= spacewidth;
- }
- else {
- // create four verts for this character:
- int v = count*4;
- double char_x = GlyphLocationX(c);
- double char_y = GlyphLocationY(c);
- double char_w = glyph[c].width;
- double char_h = height;
-
- if (y1 + char_h > clip.y + clip.h) {
- char_h = clip.y + clip.h - y1;
- }
-
- vset->s_loc[v+0].x = (float) (x1 - 0.5);
- vset->s_loc[v+0].y = (float) (y1 - 0.5);
- vset->tu[v+0] = (float) (char_x / 256);
- vset->tv[v+0] = (float) (char_y / 256);
- vset->diffuse[v+0] = color.Value();
-
- vset->s_loc[v+1].x = (float) (x1 + char_w - 0.5);
- vset->s_loc[v+1].y = (float) (y1 - 0.5);
- vset->tu[v+1] = (float) (char_x / 256 + char_w / 256);
- vset->tv[v+1] = (float) (char_y / 256);
- vset->diffuse[v+1] = color.Value();
-
- vset->s_loc[v+2].x = (float) (x1 + char_w - 0.5);
- vset->s_loc[v+2].y = (float) (y1 + char_h - 0.5);
- vset->tu[v+2] = (float) (char_x / 256 + char_w / 256);
- vset->tv[v+2] = (float) (char_y / 256 + char_h / 256);
- vset->diffuse[v+2] = color.Value();
-
- vset->s_loc[v+3].x = (float) (x1 - 0.5);
- vset->s_loc[v+3].y = (float) (y1 + char_h - 0.5);
- vset->tu[v+3] = (float) (char_x / 256);
- vset->tv[v+3] = (float) (char_y / 256 + char_h / 256);
- vset->diffuse[v+3] = color.Value();
-
- x1 += cw + k;
- maxw -= cw + k;
-
- count++;
- }
- }
- }
-
- if (count) {
- // this small hack is an optimization to reduce the
- // size of vertex buffer needed for font rendering:
-
- int old_nverts = vset->nverts;
- vset->nverts = 4 * count;
-
- // create a larger poly array, if necessary:
- if (count > npolys) {
- if (polys)
- delete [] polys;
-
- npolys = count;
- polys = new(__FILE__,__LINE__) Poly[npolys];
- Poly* p = polys;
- int index = 0;
-
- for (int i = 0; i < npolys; i++) {
- p->nverts = 4;
- p->vertex_set = vset;
- p->material = material;
- p->verts[0] = index++;
- p->verts[1] = index++;
- p->verts[2] = index++;
- p->verts[3] = index++;
-
- p++;
- }
- }
-
- video->DrawScreenPolys(count, polys, blend);
-
- // remember to restore the proper size of the vertex set:
- vset->nverts = old_nverts;
- }
-
- return count;
-}
-
+/* Starshatter OpenSource Distribution + Copyright (c) 1997-2004, Destroyer Studios LLC. + All Rights Reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + * Neither the name "Destroyer Studios" nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + + SUBSYSTEM: nGenEx.lib + FILE: Font.cpp + AUTHOR: John DiCamillo + + + OVERVIEW + ======== + Font Resource class implementation +*/ + +#include "MemDebug.h" +#include "Font.h" +#include "Polygon.h" +#include "Bitmap.h" +#include "DataLoader.h" +#include "ParseUtil.h" +#include "Video.h" + +DWORD GetRealTime(); + +// +--------------------------------------------------------------------+ + +Font::Font() + : flags(0), height(0), baseline(0), interspace(0), spacewidth(0), + imagewidth(0), image(0), expansion(0), alpha(1), blend(Video::BLEND_ALPHA), + scale(1), material(0), vset(0), polys(0), npolys(0), + caret_index(-1), caret_x(0), caret_y(0), tgt_bitmap(0) +{ + ZeroMemory(name, sizeof(name)); + ZeroMemory(glyph, sizeof(glyph)); + ZeroMemory(kern, sizeof(kern)); +} + +Font::Font(const char* n) + : flags(0), height(0), baseline(0), interspace(0), spacewidth(4), + imagewidth(0), image(0), expansion(0), alpha(1), blend(Video::BLEND_ALPHA), + scale(1), material(0), vset(0), polys(0), npolys(0), + caret_index(-1), caret_x(0), caret_y(0), tgt_bitmap(0) +{ + ZeroMemory(glyph, sizeof(glyph)); + ZeroMemory(kern, sizeof(kern)); + CopyMemory(name, n, sizeof(name)); + + if (!Load(name)) { + flags = 0; + height = 0; + baseline = 0; + interspace = 0; + spacewidth = 0; + imagewidth = 0; + image = 0; + + ZeroMemory(glyph, sizeof(glyph)); + ZeroMemory(kern, sizeof(kern)); + } +} + +// +--------------------------------------------------------------------+ + +Font::~Font() +{ + if (image) delete [] image; + if (vset) delete vset; + if (polys) delete [] polys; + if (material) delete material; +} + +// +--------------------------------------------------------------------+ + +static char kern_tweak[256][256]; + +bool +Font::Load(const char* name) +{ + if (!name || !name[0]) + return false; + + char imgname[256]; + char defname[256]; + wsprintf(defname, "%s.def", name); + wsprintf(imgname, "%s.pcx", name); + + DataLoader* loader = DataLoader::GetLoader(); + if (!loader) + return false; + + LoadDef(defname, imgname); + + for (int i = 0; i < 256; i++) { + glyph[i].offset = GlyphOffset(i); + glyph[i].width = 0; + } + + if (loader->LoadBitmap(imgname, bitmap)) { + if (!bitmap.Pixels() && !bitmap.HiPixels()) + return false; + + scale = bitmap.Width() / 256; + imagewidth = bitmap.Width(); + if (height > bitmap.Height()) + height = bitmap.Height(); + + int imgsize = bitmap.Width() * bitmap.Height(); + image = new(__FILE__,__LINE__) BYTE[imgsize]; + + if (image) { + if (bitmap.Pixels()) { + CopyMemory(image, bitmap.Pixels(), imgsize); + } + + else { + for (int i = 0; i < imgsize; i++) + image[i] = (BYTE) bitmap.HiPixels()[i].Alpha(); + } + } + + material = new(__FILE__,__LINE__) Material; + material->tex_diffuse = &bitmap; + } + else { + return false; + } + + for (int i = 0; i < 256; i++) { + glyph[i].width = CalcWidth(i); + } + + color = Color::White; + + if (!(flags & (FONT_FIXED_PITCH | FONT_NO_KERN))) + AutoKern(); + + for (int i = 0; i < 256; i++) { + for (int j = 0; j < 256; j++) { + if (kern_tweak[i][j] < 100) { + kern[i][j] = kern_tweak[i][j]; + } + } + } + + return true; +} + +void +Font::LoadDef(char* defname, char* imgname) +{ + for (int i = 0; i < 256; i++) + for (int j = 0; j < 256; j++) + kern_tweak[i][j] = 111; + + DataLoader* loader = DataLoader::GetLoader(); + if (!loader) + return; + + BYTE* block; + int blocklen = loader->LoadBuffer(defname, block, true); + + if (!block || blocklen < 4) + return; + + Parser parser(new(__FILE__,__LINE__) BlockReader((const char*) block, blocklen)); + Term* term = parser.ParseTerm(); + + if (!term) { + Print("WARNING: could not parse '%s'\n", defname); + return; + } + else { + TermText* file_type = term->isText(); + if (!file_type || file_type->value() != "FONT") { + Print("WARNING: invalid font def file '%s'\n", defname); + return; + } + } + + do { + delete term; + + term = parser.ParseTerm(); + + if (term) { + TermDef* def = term->isDef(); + if (def) { + if (def->name()->value().indexOf("image") == 0) { + GetDefText(imgname, def, defname); + } + + else if (def->name()->value() == "height") { + int h=0; + GetDefNumber(h, def, defname); + + if (h >= 0 && h <= 32) + height = (BYTE) h; + } + + else if (def->name()->value() == "baseline") { + int b=0; + GetDefNumber(b, def, defname); + + if (b >= 0 && b <= 32) + baseline = (BYTE) b; + } + + else if (def->name()->value() == "flags") { + if (def->term()->isText()) { + Text buf; + GetDefText(buf, def, defname); + buf.setSensitive(false); + + flags = 0; + + if (buf.contains("caps")) + flags = flags | FONT_ALL_CAPS; + + if (buf.contains("kern")) + flags = flags | FONT_NO_KERN; + + if (buf.contains("fixed")) + flags = flags | FONT_FIXED_PITCH; + } + + else { + int f=0; + GetDefNumber(f, def, defname); + flags = (WORD) f; + } + } + + else if (def->name()->value() == "interspace") { + int n=0; + GetDefNumber(n, def, defname); + + if (n >= 0 && n <= 100) + interspace = (BYTE) n; + } + + else if (def->name()->value() == "spacewidth") { + int n=0; + GetDefNumber(n, def, defname); + + if (n >= 0 && n <= 100) + spacewidth = (BYTE) n; + } + + else if (def->name()->value() == "expansion") { + GetDefNumber(expansion, def, defname); + } + + else if (def->name()->value() == "kern") { + TermStruct* val = def->term()->isStruct(); + + char a[8], b[8]; + int k=111; + + a[0] = 0; + b[0] = 0; + + for (int i = 0; i < val->elements()->size(); i++) { + TermDef* pdef = val->elements()->at(i)->isDef(); + if (pdef) { + if (pdef->name()->value() == "left" || pdef->name()->value() == "a") + GetDefText(a, pdef, defname); + + else if (pdef->name()->value() == "right" || pdef->name()->value() == "b") + GetDefText(b, pdef, defname); + + else if (pdef->name()->value() == "kern" || pdef->name()->value() == "k") + GetDefNumber(k, pdef, defname); + } + } + + if (k < 100) + kern_tweak[a[0]][b[0]] = k; + } + + else { + Print("WARNING: unknown object '%s' in '%s'\n", + def->name()->value().data(), defname); + } + } + else { + Print("WARNING: term ignored in '%s'\n", defname); + term->print(); + } + } + } + while (term); + + loader->ReleaseBuffer(block); + +} + +// +--------------------------------------------------------------------+ + +static const int pipe_width = 16; +static const int char_width = 16; +static const int char_height = 16; +static const int row_items = 16; +static const int row_width = row_items * char_width; +static const int row_size = char_height * row_width; + +int +Font::GlyphOffset(BYTE c) const +{ + if (flags & FONT_ALL_CAPS) + if (islower(c)) + c = toupper(c); + + return (c/row_items * row_size * scale * scale + + c%row_items * char_width * scale); +} + +int +Font::GlyphLocationX(BYTE c) const +{ + if (flags & FONT_ALL_CAPS) + if (islower(c)) + c = toupper(c); + + return c%row_items * char_width; +} + +int +Font::GlyphLocationY(BYTE c) const +{ + if (flags & FONT_ALL_CAPS) + if (islower(c)) + c = toupper(c); + + return c/row_items * char_height; +} + +// +--------------------------------------------------------------------+ + +int +Font::CalcWidth(BYTE c) const +{ + if (c >= PIPE_NBSP && c <= ARROW_RIGHT) + return pipe_width; + + if (c >= 128 || !image) + return 0; + + // all digits should be same size: + if (isdigit(c)) + c = '0'; + + int result = 0; + int w = 16 * scale; + int h = 16 * scale; + + BYTE* src = image + GlyphOffset(c); + + for (int y = 0; y < h; y++) { + BYTE* pleft = src; + + for (int x = 0; x < w; x++) { + if (*pleft++ > 0 && x > result) + result = x; + } + + src += imagewidth; + } + + return result + 2; +} + +// +--------------------------------------------------------------------+ + +struct FontKernData +{ + double l[32]; + double r[32]; +}; + +void +Font::FindEdges(BYTE c, double* l, double* r) +{ + if (!image) + return; + + int w = glyph[c].width; + int h = height; + + if (h > 32) + h = 32; + + BYTE* src = image + GlyphOffset(c); + + for (int y = 0; y < h; y++) { + BYTE* pleft = src; + BYTE* pright = src+w-1; + + *l = -1; + *r = -1; + + for (int x = 0; x < w; x++) { + if (*l == -1 && *pleft != 0) + *l = x + 1 - (double) *pleft/255.0; + if (*r == -1 && *pright != 0) + *r = x + 1 - (double) *pright/255.0; + + pleft++; + pright--; + } + + src += imagewidth; + l++; + r++; + } +} + +static bool nokern(char c) +{ + if (c <= Font::ARROW_RIGHT) + return true; + + const char* nokernchars = "0123456789+=<>-.,:;?'\""; + + if (strchr(nokernchars, c)) + return true; + + return false; +} + +void +Font::AutoKern() +{ + FontKernData* data = new(__FILE__,__LINE__) FontKernData[256]; + + if (!data) + return; + + int h = height; + if (h > 32) h = 32; + + int i, j; + + // first, compute row edges for each glyph: + + for (i = 0; i < 256; i++) { + ZeroMemory(&data[i], sizeof(FontKernData)); + + char c = i; + + if ((flags & FONT_ALL_CAPS) && islower(c)) + c = toupper(c); + + if (glyph[(BYTE) c].width > 0) { + FindEdges((BYTE) c, data[i].l, data[i].r); + } + } + + // then, compute the appropriate kern for each pair. + // use a desired average distance of one pixel, + // with a desired minimum distance of more than half a pixel: + + double desired_avg = 2.5 + expansion; + double desired_min = 1; + + for (i = 0; i < 256; i++) { + for (j = 0; j < 256; j++) { + // no kerning between digits or dashes: + if (nokern(i) || nokern(j)) { + kern[i][j] = (char) 0; + } + + else { + double delta = 0; + double avg = 0; + double min = 2500; + int n = 0; + + for (int y = 0; y < h; y++) { + if (data[i].r[y] >= 0 && data[j].l[y] >= 0) { + delta = data[i].r[y] + data[j].l[y]; + avg += delta; + if (delta < min) + min = delta; + + n++; + } + } + + if (n > 0) { + avg /= n; + + delta = desired_avg - avg; + + if (delta < desired_min - min) { + delta = ceil(desired_min - min); + + if (i == 'T' && islower(j) && !(flags & FONT_ALL_CAPS)) + delta += 1; + } + } + else { + delta = 0; + } + + kern[i][j] = (char) delta; + } + } + } + + delete [] data; +} + +// +--------------------------------------------------------------------+ + +int +Font::CharWidth(char c) const +{ + if (flags & FONT_ALL_CAPS) + if (islower(c)) + c = toupper(c); + + int result = 0; + + if (c >= PIPE_NBSP && c <= ARROW_RIGHT) + result = pipe_width; + + else if (c < 0 || isspace(c)) + result = spacewidth; + + else + result = glyph[c].width + interspace; + + return result; +} + +int +Font::SpaceWidth() const +{ + return spacewidth; +} + +int +Font::KernWidth(char a, char b) const +{ + if (flags & FONT_ALL_CAPS) { + if (islower(a)) a = toupper(a); + if (islower(b)) b = toupper(b); + } + + return kern[a][b]; +} + +void +Font::SetKern(char a, char b, int k) +{ + if (k < -100 || k > 100) + return; + + if (flags & FONT_ALL_CAPS) { + if (islower(a)) a = toupper(a); + if (islower(b)) b = toupper(b); + } + + kern[a][b] = (char) k; +} + +// +--------------------------------------------------------------------+ + +int +Font::StringWidth(const char* str, int len) const +{ + int result = 0; + + if (!str) + return result; + + if (!len) + len = strlen(str); + + const char* c = str; + for (int i = 0; i < len; i++) { + if (isspace(*c) && (*c < PIPE_NBSP || *c > ARROW_RIGHT)) + result += spacewidth; + else { + int cc = *c; + if (flags & FONT_ALL_CAPS) + if (islower(cc)) + cc = toupper(cc); + + int k = 0; + if (i < len-1) + k = kern[cc][str[i+1]]; + + result += glyph[cc].width + interspace + k; + } + c++; + } + + return result; +} + +// +--------------------------------------------------------------------+ + +void +Font::DrawText(const char* text, int count, Rect& text_rect, DWORD flags, Bitmap* tgt) +{ + Rect clip_rect = text_rect; + + if (clip_rect.w < 1 || clip_rect.h < 1) + return; + + tgt_bitmap = tgt; + + if (text && text[0]) { + if (count < 1) + count = strlen(text); + + // single line: + if (flags & DT_SINGLELINE) { + DrawTextSingle(text, count, text_rect, clip_rect, flags); + } + + // multi-line with word wrap: + else if (flags & DT_WORDBREAK) { + DrawTextWrap(text, count, text_rect, clip_rect, flags); + } + + // multi-line with clip: + else { + DrawTextMulti(text, count, text_rect, clip_rect, flags); + } + } + else { + caret_x = text_rect.x + 2; + caret_y = text_rect.y + 2; + } + + // if calc only, update the rectangle: + if (flags & DT_CALCRECT) { + text_rect.h = clip_rect.h; + text_rect.w = clip_rect.w; + } + + // otherwise, draw caret if requested: + else if (caret_index >= 0 && caret_y >= text_rect.y && caret_y <= text_rect.y + text_rect.h) {//caret_y + height < text_rect.y + text_rect.h) { + Video* video = Video::GetInstance(); + + if (video && (GetRealTime() / 500) & 1) { + float v[4]; + v[0] = (float) (caret_x + 1); + v[1] = (float) (caret_y); + v[2] = (float) (caret_x + 1); + v[3] = (float) (caret_y + height); + + video->DrawScreenLines(1, v, color, blend); + } + + caret_index = -1; + } + + tgt_bitmap = 0; +} + +// +--------------------------------------------------------------------+ + +static int find_next_word_start(const char* text, int index) +{ + // step through intra-word space: + while (text[index] && isspace(text[index]) && text[index] != '\n') + index++; + + return index; +} + +static int find_next_word_end(const char* text, int index) +{ + if (index < 0) + return index; + + // check for leading newline: + if (text[index] == '\n') + return index; + + // step through intra-word space: + while (text[index] && isspace(text[index])) + index++; + + // step through word: + while (text[index] && !isspace(text[index])) + index++; + + return index-1; +} + +// +--------------------------------------------------------------------+ + +void +Font::DrawTextSingle(const char* text, int count, const Rect& text_rect, Rect& clip_rect, DWORD flags) +{ + // parse the format flags: + bool nodraw = (flags & DT_CALCRECT) ?true:false; + + int align = DT_LEFT; + if (flags & DT_RIGHT) + align = DT_RIGHT; + else if (flags & DT_CENTER) + align = DT_CENTER; + + int max_width = 0; + + int valign = DT_TOP; + if (flags & DT_BOTTOM) valign = DT_BOTTOM; + else if (flags & DT_VCENTER) valign = DT_VCENTER; + + int xoffset = 0; + int yoffset = 0; + + int length = StringWidth(text, count); + if (length < text_rect.w) { + switch (align) { + default: + case DT_LEFT: break; + case DT_RIGHT: xoffset = text_rect.w - length; break; + case DT_CENTER: xoffset = (text_rect.w - length)/2; break; + } + } + + if (Height() < text_rect.h) { + switch (valign) { + default: + case DT_TOP: break; + case DT_BOTTOM: yoffset = text_rect.h - Height(); break; + case DT_VCENTER: yoffset = (text_rect.h - Height())/2; break; + } + } + + max_width = length; + + // if calc only, update the rectangle: + if (nodraw) { + clip_rect.h = Height(); + clip_rect.w = max_width; + } + + // otherwise, draw the string now: + else { + int x1 = text_rect.x + xoffset; + int y1 = text_rect.y + yoffset; + + DrawString(text, count, x1, y1, text_rect); + } + + if (caret_index >= 0 && caret_index <= count) { + caret_x = text_rect.x + xoffset; + caret_y = text_rect.y + yoffset; + + if (caret_index > 0) + caret_x += StringWidth(text, caret_index); + } + + else { + caret_x = text_rect.x + 0; + caret_y = text_rect.y + 0; + } +} + +// +--------------------------------------------------------------------+ + +void +Font::DrawTextWrap(const char* text, int count, const Rect& text_rect, Rect& clip_rect, DWORD flags) +{ + // parse the format flags: + bool nodraw = (flags & DT_CALCRECT) ?true:false; + + int align = DT_LEFT; + if (flags & DT_RIGHT) + align = DT_RIGHT; + else if (flags & DT_CENTER) + align = DT_CENTER; + + int nlines = 0; + int max_width = 0; + + int line_start = 0; + int line_count = 0; + int count_remaining = count; + int curr_word_end = -1; + int next_word_end = 0; + int eol_index = 0; + + int xoffset = 0; + int yoffset = 0; + + caret_x = -1; + caret_y = -1; + + // repeat for each line of text: + while (count_remaining > 0) { + int length = 0; + + // find the end of the last whole word that fits on the line: + for (;;) { + next_word_end = find_next_word_end(text, curr_word_end+1); + + if (next_word_end < 0 || next_word_end == curr_word_end) + break; + + if (text[next_word_end] == '\n') { + eol_index = curr_word_end = next_word_end; + break; + } + + int word_len = next_word_end - line_start + 1; + + length = StringWidth(text+line_start, word_len); + + if (length < text_rect.w) { + curr_word_end = next_word_end; + + // check for a newline in the next block of white space: + eol_index = 0; + const char* eol = &text[curr_word_end+1]; + while (*eol && isspace(*eol) && *eol != '\n') + eol++; + + if (*eol == '\n') { + eol_index = eol - text; + break; + } + } + else + break; + } + + line_count = curr_word_end - line_start + 1; + + if (line_count > 0) { + length = StringWidth(text+line_start, line_count); + } + + // there was a single word longer than the entire line: + else { + line_count = next_word_end - line_start + 1; + length = StringWidth(text+line_start, line_count); + curr_word_end = next_word_end; + } + + xoffset = 0; + if (length < text_rect.w) { + switch (align) { + default: + case DT_LEFT: break; + case DT_RIGHT: xoffset = text_rect.w - length; break; + case DT_CENTER: xoffset = (text_rect.w - length)/2; break; + } + } + + if (length > max_width) max_width = length; + + if (eol_index > 0) + curr_word_end = eol_index; + + int next_line_start = find_next_word_start(text, curr_word_end+1); + + if (length > 0 && !nodraw) { + int x1 = text_rect.x + xoffset; + int y1 = text_rect.y + yoffset; + + DrawString(text+line_start, line_count, x1, y1, text_rect); + + if (caret_index == line_start) { + caret_x = x1 - 2; + caret_y = y1; + } + else if (caret_index > line_start && caret_index < next_line_start) { + caret_x = text_rect.x + xoffset + StringWidth(text+line_start, caret_index-line_start) - 2; + caret_y = text_rect.y + yoffset; + } + else if (caret_index == count) { + if (text[count-1] == '\n') { + caret_x = x1 - 2; + caret_y = y1 + height; + } + else { + caret_x = text_rect.x + xoffset + StringWidth(text+line_start, caret_index-line_start) - 2; + caret_y = text_rect.y + yoffset; + } + } + } + + nlines++; + yoffset += Height(); + if (eol_index > 0) + curr_word_end = eol_index; + line_start = find_next_word_start(text, curr_word_end+1); + count_remaining = count - line_start; + } + + // if calc only, update the rectangle: + if (nodraw) { + clip_rect.h = nlines * Height(); + clip_rect.w = max_width; + } +} + +// +--------------------------------------------------------------------+ + +void +Font::DrawTextMulti(const char* text, int count, const Rect& text_rect, Rect& clip_rect, DWORD flags) +{ + // parse the format flags: + bool nodraw = (flags & DT_CALCRECT) ?true:false; + + int align = DT_LEFT; + if (flags & DT_RIGHT) + align = DT_RIGHT; + else if (flags & DT_CENTER) + align = DT_CENTER; + + int max_width = 0; + int line_start = 0; + int count_remaining = count; + + int xoffset = 0; + int yoffset = 0; + int nlines = 0; + + // repeat for each line of text: + while (count_remaining > 0) { + int length = 0; + int line_count = 0; + + // find the end of line: + while (line_count < count_remaining) { + char c = text[line_start+line_count]; + if (!c || c == '\n') + break; + + line_count++; + } + + if (line_count > 0) { + length = StringWidth(text+line_start, line_count); + } + + xoffset = 0; + if (length < text_rect.w) { + switch (align) { + default: + case DT_LEFT: break; + case DT_RIGHT: xoffset = text_rect.w - length; break; + case DT_CENTER: xoffset = (text_rect.w - length)/2; break; + } + } + + if (length > max_width) max_width = length; + + if (length && !nodraw) { + int x1 = text_rect.x + xoffset; + int y1 = text_rect.y + yoffset; + + DrawString(text+line_start, line_count, x1, y1, text_rect); + } + + nlines++; + yoffset += Height(); + + if (line_start+line_count+1 < count) { + line_start = find_next_word_start(text, line_start+line_count+1); + count_remaining = count - line_start; + } + else { + count_remaining = 0; + } + } + + // if calc only, update the rectangle: + if (nodraw) { + clip_rect.h = nlines * Height(); + clip_rect.w = max_width; + } +} + +// +--------------------------------------------------------------------+ + +int +Font::DrawString(const char* str, int len, int x1, int y1, const Rect& clip, Bitmap* tgt) +{ + Video* video = Video::GetInstance(); + int count = 0; + int maxw = clip.w; + int maxh = clip.h; + + if (len < 1 || !video) + return count; + + // vertical clip + if ((y1 < clip.y) || (y1 > clip.y + clip.h)) + return count; + + // RENDER TO BITMAP + + if (!tgt) + tgt = tgt_bitmap; + + if (tgt) { + for (int i = 0; i < len; i++) { + char c = str[i]; + + if ((flags & FONT_ALL_CAPS) && islower(c)) + c = toupper(c); + + int cw = glyph[c].width + interspace; + int ch = height; + int k = 0; + + if (i < len-1) + k = kern[c][str[i+1]]; + + // horizontal clip: + if (x1 < clip.x) { + if (isspace(c) && (c < PIPE_NBSP || c > ARROW_RIGHT)) { + x1 += spacewidth; + maxw -= spacewidth; + } + else { + x1 += cw+k; + maxw -= cw+k; + } + } + else if (x1+cw > clip.x+clip.w) { + return count; + } + else { + if (isspace(c) && (c < PIPE_NBSP || c > ARROW_RIGHT)) { + x1 += spacewidth; + maxw -= spacewidth; + } + else { + int sx = GlyphLocationX(c); + int sy = GlyphLocationY(c); + + Color* srcpix = bitmap.HiPixels(); + Color* dstpix = tgt->HiPixels(); + if (srcpix && dstpix) { + int spitch = bitmap.Width(); + int dpitch = tgt->Width(); + + Color* dst = dstpix + (y1*dpitch) + x1; + Color* src = srcpix + (sy*spitch) + sx; + + for (int i = 0; i < ch; i++) { + Color* ps = src; + Color* pd = dst; + + for (int n = 0; n < cw; n++) { + DWORD alpha = ps->Alpha(); + if (alpha) { + *pd = color.dim(alpha / 240.0); + } + ps++; + pd++; + } + + dst += dpitch; + src += spitch; + } + } + else { + // this probably won't work... + tgt->BitBlt(x1, y1, bitmap, sx, sy, cw, ch, true); + } + + x1 += cw + k; + maxw -= cw + k; + } + + count++; + } + } + return count; + } + + // RENDER TO VIDEO + + // allocate verts, if necessary + int nverts = 4*len; + if (!vset) { + vset = new(__FILE__,__LINE__) VertexSet(nverts); + + if (!vset) + return false; + + vset->space = VertexSet::SCREEN_SPACE; + + for (int v = 0; v < vset->nverts; v++) { + vset->s_loc[v].z = 0.0f; + vset->rw[v] = 1.0f; + } + } + else if (vset->nverts < nverts) { + vset->Resize(nverts); + + for (int v = 0; v < vset->nverts; v++) { + vset->s_loc[v].z = 0.0f; + vset->rw[v] = 1.0f; + } + } + + if (vset->nverts < nverts) + return count; + + if (alpha < 1) + color.SetAlpha((BYTE) (alpha * 255.0f)); + else + color.SetAlpha(255); + + for (int i = 0; i < len; i++) { + char c = str[i]; + + if ((flags & FONT_ALL_CAPS) && islower(c)) + c = toupper(c); + + int cw = glyph[c].width + interspace; + int k = 0; + + if (i < len-1) + k = kern[c][str[i+1]]; + + // horizontal clip: + if (x1 < clip.x) { + if (isspace(c) && (c < PIPE_NBSP || c > ARROW_RIGHT)) { + x1 += spacewidth; + maxw -= spacewidth; + } + else { + x1 += cw+k; + maxw -= cw+k; + } + } + else if (x1+cw > clip.x+clip.w) { + break; + } + else { + if (isspace(c) && (c < PIPE_NBSP || c > ARROW_RIGHT)) { + x1 += spacewidth; + maxw -= spacewidth; + } + else { + // create four verts for this character: + int v = count*4; + double char_x = GlyphLocationX(c); + double char_y = GlyphLocationY(c); + double char_w = glyph[c].width; + double char_h = height; + + if (y1 + char_h > clip.y + clip.h) { + char_h = clip.y + clip.h - y1; + } + + vset->s_loc[v+0].x = (float) (x1 - 0.5); + vset->s_loc[v+0].y = (float) (y1 - 0.5); + vset->tu[v+0] = (float) (char_x / 256); + vset->tv[v+0] = (float) (char_y / 256); + vset->diffuse[v+0] = color.Value(); + + vset->s_loc[v+1].x = (float) (x1 + char_w - 0.5); + vset->s_loc[v+1].y = (float) (y1 - 0.5); + vset->tu[v+1] = (float) (char_x / 256 + char_w / 256); + vset->tv[v+1] = (float) (char_y / 256); + vset->diffuse[v+1] = color.Value(); + + vset->s_loc[v+2].x = (float) (x1 + char_w - 0.5); + vset->s_loc[v+2].y = (float) (y1 + char_h - 0.5); + vset->tu[v+2] = (float) (char_x / 256 + char_w / 256); + vset->tv[v+2] = (float) (char_y / 256 + char_h / 256); + vset->diffuse[v+2] = color.Value(); + + vset->s_loc[v+3].x = (float) (x1 - 0.5); + vset->s_loc[v+3].y = (float) (y1 + char_h - 0.5); + vset->tu[v+3] = (float) (char_x / 256); + vset->tv[v+3] = (float) (char_y / 256 + char_h / 256); + vset->diffuse[v+3] = color.Value(); + + x1 += cw + k; + maxw -= cw + k; + + count++; + } + } + } + + if (count) { + // this small hack is an optimization to reduce the + // size of vertex buffer needed for font rendering: + + int old_nverts = vset->nverts; + vset->nverts = 4 * count; + + // create a larger poly array, if necessary: + if (count > npolys) { + if (polys) + delete [] polys; + + npolys = count; + polys = new(__FILE__,__LINE__) Poly[npolys]; + Poly* p = polys; + int index = 0; + + for (int i = 0; i < npolys; i++) { + p->nverts = 4; + p->vertex_set = vset; + p->material = material; + p->verts[0] = index++; + p->verts[1] = index++; + p->verts[2] = index++; + p->verts[3] = index++; + + p++; + } + } + + video->DrawScreenPolys(count, polys, blend); + + // remember to restore the proper size of the vertex set: + vset->nverts = old_nverts; + } + + return count; +} + |