void MfcViewAdapter::onDraw(CDC* pDC)
{
_coreView->setScreenDpi(pDC->GetDeviceCaps(LOGPIXELSY));
_coreView->setBkColor(this, pDC->GetBkColor() | 0xFF000000);
if (_canvas.beginPaint(_wnd->GetSafeHwnd(), pDC->GetSafeHdc())) {
if (!_canvas.drawCachedBitmap()) {
_canvas.clearWindow();
_coreView->drawAll(this, &_canvas);
// TODO: Fix _canvas.saveCachedBitmap();
}
_coreView->dynDraw(this, &_canvas);
_canvas.endPaint();
}
}
void MfcViewAdapter::regenAll(bool changed)
{
if (changed) {
_coreView->submitBackDoc(this, changed);
}
_coreView->submitDynamicShapes(this);
_canvas.clearCachedBitmap();
if (_wnd->GetSafeHwnd()) {
_wnd->InvalidateRect(NULL, FALSE);
}
}
void ondraw(HWND hwnd)
{
DWORD tick = GetTickCount();
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps); // 获取重绘消息的句柄数据
SetBkColor(hdc, GetSysColor(COLOR_WINDOW)); // 设置背景色以便传到画布
if (_canvas.beginPaint(hwnd, hdc)) { // 开始在画布上绘制
if (!_canvas.drawCachedBitmap()) { // 显示上次保存的内容
_canvas.clearWindow(); // 使用背景色清除显示
TestCanvas::test(&_canvas, _tests); // 绘制测试图形
if ((_tests & 0x400) == 0) // not testDynCurves
_canvas.saveCachedBitmap(); // 缓存显示的内容
}
dyndraw(&_canvas); // 绘制动态图形
_canvas.endPaint(); // 结束绘制
}
EndPaint(hwnd, &ps);
tick = GetTickCount() - tick;
}
void switchTest(HWND hwnd)
{
int a[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40,
0x80 | 0x40 | 0x02, 0x100, 0x200, 0x400 };
int n = sizeof(a)/sizeof(a[0]);
int i = n;
while (--i > 0 && a[i] != _tests) ;
_tests = a[(i + 1) % n];
regen(hwnd);
GiGdipCanvas canvas;
if (canvas.beginPaintBuffered(1024, 768)) {
TestCanvas::test(&canvas, _tests);
WCHAR filename[MAX_PATH];
GetModuleFileNameW(NULL, filename, MAX_PATH);
wcscpy_s(wcsrchr(filename, L'.'), 5, L".png");
canvas.save(filename);
canvas.endPaint();
}
}
void regen(HWND hwnd)
{
_canvas.clearCachedBitmap(); // 需要重新构建显示
InvalidateRect(hwnd, NULL, FALSE); // 触发重绘消息
}