114 lines
2.7 KiB
C++
114 lines
2.7 KiB
C++
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#include <precomp.h>
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#include "bufferpaintwnd.h"
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#include <tataki/canvas/bltcanvas.h>
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// -----------------------------------------------------------------------
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BufferPaintWnd::BufferPaintWnd() {
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canvas_w = -1;
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canvas_h = -1;
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render_canvas = NULL;
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invalidated = 1;
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}
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// -----------------------------------------------------------------------
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BufferPaintWnd::~BufferPaintWnd() {
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delete render_canvas;
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}
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// -----------------------------------------------------------------------
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int BufferPaintWnd::onInit() {
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BUFFERPAINTWND_PARENT::onInit();
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return 1;
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}
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// -----------------------------------------------------------------------
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void BufferPaintWnd::bufferPaint() {
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updateCanvas();
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if (render_canvas != NULL)
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onBufferPaint(render_canvas, canvas_w, canvas_h);
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}
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void BufferPaintWnd::invalidateBuffer() {
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invalidated = 1;
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invalidate();
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}
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// -----------------------------------------------------------------------
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void BufferPaintWnd::getBufferPaintSize(int *w, int *h) {
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RECT r;
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getClientRect(&r);
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if (w) *w = r.right-r.left;
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if (h) *h = r.bottom-r.top;
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}
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// -----------------------------------------------------------------------
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void BufferPaintWnd::getBufferPaintSource(RECT *r) {
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ASSERT(r != NULL);
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r->left = 0;
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r->right = canvas_w;
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r->top = 0;
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r->bottom = canvas_h;
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}
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// -----------------------------------------------------------------------
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void BufferPaintWnd::getBufferPaintDest(RECT *r) {
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ASSERT(r != NULL);
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getClientRect(r);
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}
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// -----------------------------------------------------------------------
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int BufferPaintWnd::onPaint(Canvas *canvas) {
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BUFFERPAINTWND_PARENT::onPaint(canvas);
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if (invalidated) bufferPaint();
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invalidated = 0;
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RECT r;
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getBufferPaintDest(&r);
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RECT sr;
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getBufferPaintSource(&sr);
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render_canvas->/*getSkinBitmap()->*/stretchToRectAlpha(canvas, &sr, &r, getPaintingAlpha());
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return 1;
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}
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// -----------------------------------------------------------------------
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int BufferPaintWnd::onResize() {
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if (!BUFFERPAINTWND_PARENT::onResize()) return 0;
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if (updateCanvas()) {
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invalidated = 1;
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invalidate();
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}
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return 1;
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}
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// -----------------------------------------------------------------------
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int BufferPaintWnd::updateCanvas() {
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int w, h;
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getBufferPaintSize(&w, &h);
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if (wantEvenAlignment()) {
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if (w & 1) w++;
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if (h & 1) h++;
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}
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if (w == 0 || h == 0) return 0;
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int newone = 0;
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if (canvas_w != w || canvas_h != h) {
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if (render_canvas)
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render_canvas->DestructiveResize(w, wantNegativeHeight() ? -h : h);
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else
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render_canvas = new BltCanvas(w, wantNegativeHeight() ? -h : h, getOsWindowHandle());
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canvas_w = w;
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canvas_h = h;
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newone = 1;
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onNewBuffer(canvas_w, canvas_h);
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}
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return newone;
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}
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