// Paint windows in z-order by first collecting the windows
// and then painting consecutive layers with the same z-order,
// starting with the lowest z-order.
// We don't sort because we want to preserve the order of
// containment of windows with the same z-order and non-stable
// sort could change it.
static void PaintWindowsInZOrder(Graphics *g, Control *c)
{
Vec<CtrlAndOffset> toPaint;
WndFilter wndFilter;
CtrlAndOffset * coff;
Pen debugPen(Color(255, 0, 0), 1);
CollectWindowsBreathFirst(c, 0, 0, &wndFilter, &toPaint);
size_t paintedCount = 0;
int16 lastPaintedZOrder = INT16_MIN;
for (;;) {
// find which z-order should we paint now
int16 minUnpaintedZOrder = INT16_MAX;
for (coff = toPaint.IterStart(); coff; coff = toPaint.IterNext()) {
int16 zOrder = coff->c->zOrder;
if ((zOrder > lastPaintedZOrder) && (zOrder < minUnpaintedZOrder))
minUnpaintedZOrder = zOrder;
}
for (coff = toPaint.IterStart(); coff; coff = toPaint.IterNext()) {
if (minUnpaintedZOrder == coff->c->zOrder) {
coff->c->Paint(g, coff->offX, coff->offY);
if (IsDebugPaint()) {
Rect bbox(coff->offX, coff->offY, coff->c->pos.Width, coff->c->pos.Height);
g->DrawRectangle(&debugPen, bbox);
}
++paintedCount;
}
}
if (paintedCount == toPaint.Count())
return;
CrashIf(paintedCount > toPaint.Count());
lastPaintedZOrder = minUnpaintedZOrder;
}
}
// TODO: draw link in the appropriate format (blue text, underlined, should show hand cursor when
// mouse is over a link. There's a slight complication here: we only get explicit information about
// strings, not about the whitespace and we should underline the whitespace as well. Also the text
// should be underlined at a baseline
void DrawHtmlPage(Graphics* g, mui::ITextRender* textDraw, Vec<DrawInstr>* drawInstructions, REAL offX, REAL offY,
bool showBbox, Color textColor, bool* abortCookie) {
Pen debugPen(Color(255, 0, 0), 1);
// Pen linePen(Color(0, 0, 0), 2.f);
Pen linePen(Color(0x5F, 0x4B, 0x32), 2.f);
WCHAR buf[512];
// GDI text rendering suffers terribly if we call GetHDC()/ReleaseHDC() around every
// draw, so first draw text and then paint everything else
textDraw->SetTextColor(textColor);
Status status = Ok;
Timer t;
textDraw->Lock();
for (DrawInstr& i : *drawInstructions) {
RectF bbox = i.bbox;
bbox.X += offX;
bbox.Y += offY;
if (InstrString == i.type || InstrRtlString == i.type) {
size_t strLen = str::Utf8ToWcharBuf(i.str.s, i.str.len, buf, dimof(buf));
// soft hyphens should not be displayed
strLen -= str::RemoveChars(buf, L"\xad");
textDraw->Draw(buf, strLen, bbox, InstrRtlString == i.type);
} else if (InstrSetFont == i.type) {
textDraw->SetFont(i.font);
}
if (abortCookie && *abortCookie)
break;
}
textDraw->Unlock();
double dur = t.Stop();
lf("DrawHtmlPage: textDraw %.2f ms", dur);
for (DrawInstr& i : *drawInstructions) {
RectF bbox = i.bbox;
bbox.X += offX;
bbox.Y += offY;
if (InstrLine == i.type) {
// hr is a line drawn in the middle of bounding box
REAL y = floorf(bbox.Y + bbox.Height / 2.f + 0.5f);
PointF p1(bbox.X, y);
PointF p2(bbox.X + bbox.Width, y);
if (showBbox) {
status = g->DrawRectangle(&debugPen, bbox);
CrashIf(status != Ok);
}
status = g->DrawLine(&linePen, p1, p2);
CrashIf(status != Ok);
} else if (InstrImage == i.type) {
// TODO: cache the bitmap somewhere (?)
Bitmap* bmp = BitmapFromData(i.img.data, i.img.len);
if (bmp) {
status = g->DrawImage(bmp, bbox, 0, 0, (REAL)bmp->GetWidth(), (REAL)bmp->GetHeight(), UnitPixel);
// GDI+ sometimes seems to succeed in loading an image because it lazily decodes it
CrashIf(status != Ok && status != Win32Error);
}
delete bmp;
} else if (InstrLinkStart == i.type) {
// TODO: set text color to blue
REAL y = floorf(bbox.Y + bbox.Height + 0.5f);
PointF p1(bbox.X, y);
PointF p2(bbox.X + bbox.Width, y);
Pen linkPen(textColor);
status = g->DrawLine(&linkPen, p1, p2);
CrashIf(status != Ok);
} else if (InstrString == i.type || InstrRtlString == i.type) {
if (showBbox) {
status = g->DrawRectangle(&debugPen, bbox);
CrashIf(status != Ok);
}
} else if (InstrLinkEnd == i.type) {
// TODO: set text color back again
} else if ((InstrElasticSpace == i.type) || (InstrFixedSpace == i.type) || (InstrString == i.type) ||
(InstrRtlString == i.type) || (InstrSetFont == i.type) || (InstrAnchor == i.type)) {
// ignore
} else {
CrashIf(true);
}
if (abortCookie && *abortCookie)
break;
}
}
