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-rw-r--r--nGenEx/ScrollWindow.cpp656
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diff --git a/nGenEx/ScrollWindow.cpp b/nGenEx/ScrollWindow.cpp
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--- a/nGenEx/ScrollWindow.cpp
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-/* 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: ScrollWindow.cpp
- AUTHOR: John DiCamillo
-
-
- OVERVIEW
- ========
- ScrollWindow ActiveWindow class
-*/
-
-#include "MemDebug.h"
-#include "ScrollWindow.h"
-#include "Button.h"
-#include "Bitmap.h"
-#include "FormWindow.h"
-#include "Video.h"
-#include "Font.h"
-#include "Keyboard.h"
-#include "Mouse.h"
-
-
-DWORD GetRealTime();
-
-// +--------------------------------------------------------------------+
-
-static int old_cursor;
-
-// +--------------------------------------------------------------------+
-
-ScrollWindow::ScrollWindow(ActiveWindow* p, int ax, int ay, int aw, int ah, DWORD aid, DWORD s, ActiveWindow* paw)
-: ActiveWindow(p->GetScreen(), ax, ay, aw, ah, aid, s, paw)
-{
- captured = false;
- dragging = false;
- selecting = false;
- scrolling = SCROLL_NONE;
-
- leading = 0;
- scroll_bar = SCROLL_AUTO;
- dragdrop = false;
- scroll_count = 0;
- line_count = 0;
- page_count = 0;
- page_size = 1;
- top_index = 0;
- line_height = 0;
- mouse_x = 0;
- mouse_y = 0;
-
- smooth_scroll = false;
- smooth_offset = 0;
-
- track_length = ah - 2*TRACK_START - THUMB_HEIGHT;
- thumb_pos = TRACK_START;
-
- char buf[32];
- sprintf_s(buf, "ScrollWindow %d", id);
- desc = buf;
-}
-
-ScrollWindow::ScrollWindow(Screen* s, int ax, int ay, int aw, int ah, DWORD aid, DWORD s1, ActiveWindow* paw)
-: ActiveWindow(s, ax, ay, aw, ah, aid, s1, paw)
-{
- captured = false;
- dragging = false;
- selecting = false;
- scrolling = SCROLL_NONE;
-
- leading = 0;
- scroll_bar = SCROLL_AUTO;
- dragdrop = false;
- scroll_count = 0;
- line_count = 0;
- page_count = 0;
- page_size = 1;
- top_index = 0;
- line_height = 0;
- mouse_x = 0;
- mouse_y = 0;
-
- smooth_scroll = false;
- smooth_offset = 0;
-
- track_length = ah - 2*TRACK_START - THUMB_HEIGHT;
- thumb_pos = TRACK_START;
-
- char buf[32];
- sprintf_s(buf, "ScrollWindow %d", id);
- desc = buf;
-}
-
-ScrollWindow::~ScrollWindow()
-{ }
-
-// +--------------------------------------------------------------------+
-
-void
-ScrollWindow::MoveTo(const Rect& r)
-{
- ActiveWindow::MoveTo(r);
-
- track_length = rect.h - 2*TRACK_START - THUMB_HEIGHT;
- thumb_pos = TRACK_START;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-ScrollWindow::Paint()
-{
- if (transparent) {
- DrawTransparent();
- }
-
- else {
- ActiveWindow::Paint();
- }
-}
-
-// +--------------------------------------------------------------------+
-
-void
-ScrollWindow::Draw()
-{
- int x = 0;
- int y = 0;
- int w = rect.w;
- int h = rect.h;
-
- if (w < 1 || h < 1 || !shown)
- return;
-
- ActiveWindow::Draw();
-
- if (line_height < 1)
- line_height = GetFont()->Height();
- page_size = h / (line_height + leading);
-
- Rect ctrl_rect(x,y,w,h);
- ctrl_rect.Deflate(BORDER_WIDTH, BORDER_WIDTH);
-
- if (IsScrollVisible()) {
- ctrl_rect.w -= SCROLL_TRACK;
- }
-
- DrawContent(ctrl_rect);
- DrawScrollBar();
-}
-
-// +--------------------------------------------------------------------+
-
-void
-ScrollWindow::DrawTransparent()
-{
- int x = 0;
- int y = 0;
- int w = rect.w;
- int h = rect.h;
-
- if (w < 1 || h < 1 || !shown)
- return;
-
- if (line_height < 1)
- line_height = GetFont()->Height();
- page_size = h / (line_height + leading);
-
- Rect ctrl_rect(x,y,w,h);
- ctrl_rect.Deflate(BORDER_WIDTH, BORDER_WIDTH);
-
- if (IsScrollVisible()) {
- ctrl_rect.w -= SCROLL_TRACK;
- }
-
- DrawTransparentContent(ctrl_rect);
- DrawScrollBar();
-}
-
-// +--------------------------------------------------------------------+
-
-void
-ScrollWindow::DrawContent(const Rect& ctrl_rect)
-{
- // override to do control-specific drawing
-}
-
-void
-ScrollWindow::DrawTransparentContent(const Rect& ctrl_rect)
-{
- // override (if necessary) to do control-specific drawing
- DrawContent(ctrl_rect);
-}
-
-void
-ScrollWindow::DrawScrollBar()
-{
- // draw scroll bar if necessary:
- if (IsScrollVisible()) {
- Color save_color = back_color;
- back_color = ShadeColor(back_color, 1.3);
-
- // draw scroll track border:
- DrawLine(rect.w-SCROLL_TRACK, BORDER_WIDTH, rect.w-SCROLL_TRACK, rect.h-BORDER_WIDTH, back_color);
-
- // draw top button
- Rect btn_rect(rect.w-SCROLL_WIDTH, BORDER_WIDTH, SCROLL_WIDTH-BORDER_WIDTH, SCROLL_HEIGHT);
- FillRect(btn_rect, back_color);
- DrawStyleRect(btn_rect, WIN_RAISED_FRAME);
-
- // draw bottom button:
- btn_rect.y = rect.h - (SCROLL_HEIGHT+BORDER_WIDTH);
- FillRect(btn_rect, back_color);
- DrawStyleRect(btn_rect, WIN_RAISED_FRAME);
-
- // draw thumb:
- btn_rect.y = thumb_pos;
- btn_rect.h = btn_rect.w;
- FillRect(btn_rect, back_color);
- DrawStyleRect(btn_rect, WIN_RAISED_FRAME);
-
- back_color = save_color;
- }
-
- if (scrolling && scroll_count)
- Scroll(scrolling, scroll_count);
-}
-
-// +--------------------------------------------------------------------+
-
-bool
-ScrollWindow::IsScrollVisible()
-{
- bool vis = false;
-
- if (scroll_bar == SCROLL_ALWAYS ||
- (scroll_bar == SCROLL_AUTO &&
- line_count > page_size)) {
- vis = true;
- }
-
- return vis;
-}
-
-int ScrollWindow::GetLineHeight()
-{
- return line_height;
-}
-
-void ScrollWindow::SetLineHeight(int h)
-{
- if (h >= 0)
- line_height = h;
-}
-
-int ScrollWindow::GetLeading()
-{
- return leading;
-}
-
-void ScrollWindow::SetLeading(int nNewValue)
-{
- if (leading != nNewValue && nNewValue >= 0) {
- leading = nNewValue;
- }
-}
-
-int ScrollWindow::GetDragDrop()
-{
- return dragdrop;
-}
-
-void ScrollWindow::SetDragDrop(int nNewValue)
-{
- if (dragdrop != nNewValue && (nNewValue == 0 || nNewValue == 1)) {
- dragdrop = nNewValue;
- }
-}
-
-int ScrollWindow::GetScrollBarVisible()
-{
- return scroll_bar;
-}
-
-void ScrollWindow::SetScrollBarVisible(int nNewValue)
-{
- if (scroll_bar != nNewValue) {
- scroll_bar = nNewValue;
- }
-}
-
-bool ScrollWindow::GetSmoothScroll()
-{
- return smooth_scroll;
-}
-
-void ScrollWindow::SetSmoothScroll(bool bNewValue)
-{
- if (smooth_scroll != bNewValue) {
- smooth_scroll = bNewValue;
- smooth_offset = top_index;
- }
-}
-
-bool ScrollWindow::CanScroll(int direction, int nlines)
-{
- return false;
-}
-
-void ScrollWindow::EnsureVisible(int index)
-{
- if (index < top_index)
- ScrollTo(index);
-
- else if (index > top_index+page_size)
- ScrollTo(index-page_size);
-}
-
-void ScrollWindow::Scroll(int direction, int nlines)
-{
- if (nlines) {
- scrolling = direction;
-
- if (direction == SCROLL_UP || direction == SCROLL_PAGE_UP) {
- top_index--;
-
- if (top_index < 0)
- top_index = 0;
-
- else
- scroll_count = nlines-1;
- }
-
- else if (direction == SCROLL_DOWN || direction == SCROLL_PAGE_DOWN) {
- top_index++;
-
- if (top_index >= line_count)
- top_index = line_count-1;
-
- else
- scroll_count = nlines-1;
- }
-
- smooth_offset = top_index;
- thumb_pos = TRACK_START + (int) (track_length * (double) top_index/(line_count-1));
-
- if (scroll_count < 1)
- scrolling = SCROLL_NONE;
- }
-}
-
-void ScrollWindow::SmoothScroll(int direction, double nlines)
-{
- if (!smooth_scroll) {
- Scroll(direction, (int) nlines);
- return;
- }
-
- if (direction == SCROLL_UP || direction == SCROLL_PAGE_UP) {
- smooth_offset -= nlines;
-
- if (smooth_offset < 0)
- smooth_offset = 0;
- }
-
- else if (direction == SCROLL_DOWN || direction == SCROLL_PAGE_DOWN) {
- smooth_offset += nlines;
-
- if (smooth_offset >= line_count)
- smooth_offset = line_count-1;
- }
-
- top_index = (int) smooth_offset;
- thumb_pos = TRACK_START + (int) (track_length * smooth_offset/(line_count-1));
- scrolling = SCROLL_NONE;
-}
-
-void ScrollWindow::ScrollTo(int index)
-{
- if (index >= 0 && index < line_count) {
- top_index = index;
- smooth_offset = index;
-
- thumb_pos = TRACK_START + (int) (track_length * smooth_offset/(line_count-1));
- }
-}
-
-int ScrollWindow::GetTopIndex()
-{
- return top_index;
-}
-
-int ScrollWindow::GetPageCount()
-{
- return line_count / GetPageSize();
-}
-
-int ScrollWindow::GetPageSize()
-{
- return page_size;
-}
-
-int ScrollWindow::GetScrollTrack()
-{
- return rect.w-SCROLL_TRACK;
-}
-
-int ScrollWindow::GetLineCount()
-{
- return line_count;
-}
-
-// +--------------------------------------------------------------------+
-
-int ScrollWindow::OnMouseMove(int x, int y)
-{
- bool dirty = false;
-
- if (captured) {
- ActiveWindow* test = GetCapture();
-
- if (test != this) {
- captured = false;
- dirty = true;
- }
-
- else {
- if (selecting && !dragging) {
- if (dragdrop && (x < rect.x ||
- x > rect.x+rect.w ||
- y < rect.y ||
- y > rect.y+rect.h)) {
-
- dragging = true;
- OnDragStart(x,y);
- }
- }
-
- if (scrolling == SCROLL_THUMB) {
- mouse_y = y - rect.y - TRACK_START;
-
- int dest = (int) ((double) mouse_y/track_length * (line_count-1));
- ScrollTo(dest);
- dirty = true;
- }
- }
- }
-
- return ActiveWindow::OnMouseMove(x,y);
-}
-
-// +--------------------------------------------------------------------+
-
-int ScrollWindow::OnLButtonDown(int x, int y)
-{
- if (!captured)
- captured = SetCapture();
-
- mouse_x = x - rect.x;
- mouse_y = y - rect.y;
-
- int x_scroll_bar = rect.w;
-
- if (scroll_bar == SCROLL_ALWAYS ||
- (scroll_bar == SCROLL_AUTO &&
- line_count > page_size))
- x_scroll_bar -= SCROLL_WIDTH;
-
- if (mouse_x < x_scroll_bar) {
- scrolling = SCROLL_NONE;
- selecting = true;
- }
-
- else {
- selecting = false;
-
- if (mouse_y < TRACK_START) {
- scrolling = SCROLL_UP;
- Scroll(scrolling, 1);
- Button::PlaySound(Button::SND_LIST_SCROLL);
- }
-
- else if (mouse_y > rect.h-TRACK_START) {
- scrolling = SCROLL_DOWN;
- if (top_index < line_count-1)
- top_index++;
- Button::PlaySound(Button::SND_LIST_SCROLL);
- }
-
- else if (mouse_y < thumb_pos) {
- scrolling = SCROLL_PAGE_UP;
- Scroll(scrolling, page_size);
- Button::PlaySound(Button::SND_LIST_SCROLL);
- }
-
- else if (mouse_y > thumb_pos+THUMB_HEIGHT) {
- scrolling = SCROLL_PAGE_DOWN;
- Scroll(scrolling, page_size);
- Button::PlaySound(Button::SND_LIST_SCROLL);
- }
-
- else {
- scrolling = SCROLL_THUMB;
- }
- }
-
- return ActiveWindow::OnLButtonDown(x,y);
-}
-
-// +--------------------------------------------------------------------+
-
-int ScrollWindow::OnLButtonUp(int x, int y)
-{
- if (captured) {
- mouse_x = x-rect.x;
- mouse_y = y-rect.y;
-
- if (dragging) {
- if (mouse_x < 0 || mouse_x > rect.w || mouse_y < 0 || mouse_y > rect.h) {
- FormWindow* parent_form = (FormWindow*) form;
-
- if (parent_form) {
- ActiveWindow* drop_target = parent_form->FindControl(x,y);
-
- if (drop_target && drop_target->IsEnabled() && drop_target->IsShown())
- drop_target->OnDragDrop(x,y,this);
- }
- }
- }
-
- ReleaseCapture();
- captured = false;
-
- Mouse::SetCursor((Mouse::CURSOR) old_cursor);
- }
-
- dragging = false;
- selecting = false;
-
- return ActiveWindow::OnLButtonUp(x,y);
-}
-
-// +--------------------------------------------------------------------+
-
-int ScrollWindow::OnMouseWheel(int wheel)
-{
- if (wheel > 0)
- Scroll(SCROLL_UP, 1);
-
- else if (wheel < 0)
- Scroll(SCROLL_DOWN, 1);
-
- if (GetLineCount() > 0) {
- static double scroll_time = 0;
-
- if (GetRealTime() - scroll_time > 0.5) {
- scroll_time = GetRealTime();
- Button::PlaySound(Button::SND_LIST_SCROLL);
- }
- }
-
- return ActiveWindow::OnMouseWheel(wheel);
-}
-
-// +--------------------------------------------------------------------+
-
-int ScrollWindow::OnClick()
-{
- int fire_select = !scrolling;
-
- if (scrolling == SCROLL_THUMB)
- scrolling = SCROLL_NONE;
-
- if (fire_select)
- return ActiveWindow::OnSelect();
- else
- return ActiveWindow::OnClick();
-
- return 0;
-}
-
-// +--------------------------------------------------------------------+
-
-int ScrollWindow::OnKeyDown(int vk, int flags)
-{
- switch (vk) {
- case VK_UP: Scroll(SCROLL_UP, 1);
- Button::PlaySound(Button::SND_LIST_SCROLL);
- break;
-
- case VK_DOWN: Scroll(SCROLL_DOWN, 1);
- Button::PlaySound(Button::SND_LIST_SCROLL);
- break;
-
- case VK_PRIOR: Scroll(SCROLL_UP, page_count);
- Button::PlaySound(Button::SND_LIST_SCROLL);
- break;
-
- case VK_NEXT: Scroll(SCROLL_DOWN, page_count);
- Button::PlaySound(Button::SND_LIST_SCROLL);
- break;
-
- case VK_HOME: EnsureVisible(0);
- Button::PlaySound(Button::SND_LIST_SCROLL);
- break;
-
- case VK_END: EnsureVisible(line_count-1);
- Button::PlaySound(Button::SND_LIST_SCROLL);
- break;
-
- default: break;
- }
-
- return ActiveWindow::OnKeyDown(vk, flags);
-}
-
-// +--------------------------------------------------------------------+
-
-int ScrollWindow::OnDragStart(int x, int y)
-{
- old_cursor = Mouse::SetCursor(Mouse::DRAG);
- return ActiveWindow::OnDragStart(x,y);
-}
-
-// +--------------------------------------------------------------------+
-
-int ScrollWindow::OnDragDrop(int x, int y, ActiveWindow* source)
-{
- return ActiveWindow::OnDragDrop(x,y,source);
-}
generated by cgit v1.1 at 2024-11-10 20:41:49 +0000