/*  Starshatter OpenSource Distribution
    Copyright (c) 1997-2004, Destroyer Studios LLC.
    All Rights Reserved.

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    modification, are permitted provided that the following conditions are met:

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      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
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    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

    SUBSYSTEM:    nGenEx.lib
    FILE:         Layout.cpp
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Layout Resource class implementation
*/

#include "MemDebug.h"
#include "Layout.h"

// +--------------------------------------------------------------------+

Layout::Layout()
{ }

Layout::~Layout()
{ }

// +--------------------------------------------------------------------+

bool
Layout::DoLayout(ActiveWindow* panel)
{
    if (!panel || panel->GetChildren().size() < 1)
    return false;

    if (cols.size() < 1 || rows.size() < 1)
    return false;

    std::vector<DWORD>   cell_x;
    std::vector<DWORD>   cell_y;

    ScaleWeights();
    CalcCells(panel->Width(), panel->Height(), cell_x, cell_y);

    ListIter<ActiveWindow> iter = panel->GetChildren();
    while (++iter) {
        ActiveWindow* w = iter.value();
        Rect          c = w->GetCells();
        Rect          r;
        Rect          rp = panel->GetRect();

        if (c.x < 0)                     c.x = 0;
        else if (c.x >= (int)cell_x.size())   c.x = cell_x.size() - 1;
        if (c.y < 0)                     c.y = 0;
        else if (c.y >= (int)cell_y.size())   c.y = cell_y.size() - 1;
        if (c.x+c.w  >= (int)cell_x.size())   c.w = cell_x.size() - c.x - 1;
        if (c.y+c.h  >= (int)cell_y.size())   c.h = cell_y.size() - c.y - 1;

        r.x = cell_x[c.x]     + w->GetCellInsets().left;
        r.y = cell_y[c.y]     + w->GetCellInsets().top;
        r.w = cell_x[c.x+c.w] - w->GetCellInsets().right  - r.x;
        r.h = cell_y[c.y+c.h] - w->GetCellInsets().bottom - r.y;

        r.x += panel->X();
        r.y += panel->Y();

        if (w->GetFixedWidth() && w->GetFixedWidth() < r.w)
        r.w = w->GetFixedWidth();

        if (w->GetFixedHeight() && w->GetFixedHeight() < r.h)
        r.h = w->GetFixedHeight();

        if (w->GetID() == 330 || w->GetID() == 125) {
            int y1 = r.y  + r.h;
            int y2 = rp.y + rp.h;
        }

        if (w->GetHidePartial() && (r.x + r.w > rp.x + rp.w)) {
            w->MoveTo(Rect(0,0,0,0));
        }

        else if (w->GetHidePartial() && (r.y + r.h > rp.y + rp.h)) {
            w->MoveTo(Rect(0,0,0,0));
        }

        else {
            w->MoveTo(r);
        }
    }

    return true;   
}

// +--------------------------------------------------------------------+

void
Layout::ScaleWeights()
{
    float total = 0;

    for (auto cwi = col_weights.begin(); cwi != col_weights.end(); ++cwi)
        total += *cwi;

    if (total > 0) {
        for (auto cwi = col_weights.begin(); cwi != col_weights.end(); ++cwi)
            *cwi = *cwi / total;
    }

    total = 0;
    for (auto rwi = row_weights.begin(); rwi != row_weights.end(); ++rwi)
        total += *rwi;

    if (total > 0) {
        for (auto rwi = row_weights.begin(); rwi != row_weights.end(); ++rwi)
            *rwi = *rwi / total;
    }
}

// +--------------------------------------------------------------------+

void
    Layout::CalcCells(DWORD w, DWORD h, std::vector<DWORD>& cell_x, std::vector<DWORD>& cell_y)
{
    DWORD       x     = 0;
    DWORD       y     = 0;
    DWORD       min_x = 0;
    DWORD       min_y = 0;
    DWORD       ext_x = 0;
    DWORD       ext_y = 0;

    for (auto cit = cols.begin(); cit != cols.end(); ++cit)
        min_x += *cit;

    for (auto rit = rows.begin(); rit != rows.end(); ++rit)
        min_y += *rit;

    if (min_x < w)
        ext_x = w - min_x;

    if (min_y < h)
        ext_y = h - min_y;

    cell_x.push_back(x);
    for (auto cit = cols.begin(); cit != cols.end(); ++cit) {
        x += *cit + (DWORD) (ext_x * col_weights[cit - cols.begin()]);
        cell_x.push_back(x);
    }

    cell_y.push_back(y);
    for (auto rit = rows.begin(); rit != rows.end(); ++rit) {
        y += *rit + (DWORD) (ext_y * row_weights[rit - rows.begin()]);
        cell_y.push_back(y);
    }
}

// +--------------------------------------------------------------------+

void
Layout::Clear()
{
    cols.clear();
    rows.clear();

    col_weights.clear();
    row_weights.clear();
}

void
Layout::AddCol(DWORD min_width, float col_factor)
{
    cols.push_back(min_width);
    col_weights.push_back(col_factor);
}

void
Layout::AddRow(DWORD min_height, float row_factor)
{
    rows.push_back(min_height);
    row_weights.push_back(row_factor);
}

void
Layout::SetConstraints(const std::vector<DWORD>& min_x,
const std::vector<DWORD>& min_y,
const std::vector<float>& weight_x,
const std::vector<float>& weight_y)
{
    Clear();

    if (min_x.size() == weight_x.size() && min_y.size() == weight_y.size()) {
        for (auto iter = min_x.begin(); iter != min_x.end(); ++iter)
            cols.push_back(*iter);

        for (auto iter = min_y.begin(); iter != min_y.end(); ++iter)
            rows.push_back(*iter);

        for (auto iter = weight_x.begin(); iter != weight_x.end(); ++iter)
            col_weights.push_back(*iter);

        for (auto iter = weight_y.begin(); iter != weight_y.end(); ++iter)
            row_weights.push_back(*iter);
    }
}

void
Layout::SetConstraints(const std::vector<float>& min_x,
const std::vector<float>& min_y,
const std::vector<float>& weight_x,
const std::vector<float>& weight_y)
{
    Clear();

    if (min_x.size() == weight_x.size() && 
            min_y.size() == weight_y.size()) {

        for (auto iter = min_x.begin(); iter != min_x.end(); ++iter)
            cols.push_back((DWORD) *iter);

        for (auto iter = min_y.begin(); iter != min_y.end(); ++iter)
            rows.push_back((DWORD) *iter);

        for (auto iter = weight_x.begin(); iter != weight_x.end(); ++iter)
            col_weights.push_back(*iter);

        for (auto iter = weight_y.begin(); iter != weight_y.end(); ++iter)
            row_weights.push_back(*iter);
    }
}

void
Layout::SetConstraints(int            ncols,
int            nrows,
const int*     min_x,
const int*     min_y,
const float*   weight_x,
const float*   weight_y)
{
    Clear();

    if (nrows > 0 && ncols > 0) {
        int i = 0;

        for (i = 0; i < ncols; i++) {
            cols.push_back(min_x[i]);
            col_weights.push_back(weight_x[i]);
        }

        for (i = 0; i < nrows; i++) {
            rows.push_back(min_y[i]);
            row_weights.push_back(weight_y[i]);
        }
    }
}