void TextRenderGdiplus::Draw(const WCHAR *s, size_t sLen, RectF& bb, bool isRtl) {
PointF pos;
bb.GetLocation(&pos);
if (!isRtl) {
gfx->DrawString(s, (INT)sLen, currFont->font, pos, nullptr, textColorBrush);
} else {
StringFormat rtl;
rtl.SetFormatFlags(StringFormatFlagsDirectionRightToLeft);
pos.X += bb.Width;
gfx->DrawString(s, (INT)sLen, currFont->font, pos, &rtl, textColorBrush);
}
}
// 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, Vec<DrawInstr> *drawInstructions, REAL offX, REAL offY, bool showBbox, Color *textColor, bool *abortCookie)
{
Color kindleTextColor(0x5F, 0x4B, 0x32); // this color matches Kindle app
if (!textColor)
textColor = &kindleTextColor;
SolidBrush brText(*textColor);
Pen debugPen(Color(255, 0, 0), 1);
//Pen linePen(Color(0, 0, 0), 2.f);
Pen linePen(Color(0x5F, 0x4B, 0x32), 2.f);
Font *font = NULL;
WCHAR buf[512];
PointF pos;
DrawInstr *i;
for (i = drawInstructions->IterStart(); i; i = drawInstructions->IterNext()) {
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)
g->DrawRectangle(&debugPen, bbox);
g->DrawLine(&linePen, p1, p2);
} else if (InstrString == i->type) {
size_t strLen = str::Utf8ToWcharBuf(i->str.s, i->str.len, buf, dimof(buf));
bbox.GetLocation(&pos);
if (showBbox)
g->DrawRectangle(&debugPen, bbox);
g->DrawString(buf, strLen, font, pos, NULL, &brText);
} else if (InstrSetFont == i->type) {
font = i->font;
} else if ((InstrElasticSpace == i->type) ||
(InstrFixedSpace == i->type) ||
(InstrAnchor == i->type)) {
// ignore
} else if (InstrImage == i->type) {
// TODO: cache the bitmap somewhere (?)
Bitmap *bmp = BitmapFromData(i->img.data, i->img.len);
if (bmp)
g->DrawImage(bmp, bbox, 0, 0, (REAL)bmp->GetWidth(), (REAL)bmp->GetHeight(), UnitPixel);
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);
g->DrawLine(&linkPen, p1, p2);
} else if (InstrLinkEnd == i->type) {
// TODO: set text color back again
} else if (InstrRtlString == i->type) {
size_t strLen = str::Utf8ToWcharBuf(i->str.s, i->str.len, buf, dimof(buf));
bbox.GetLocation(&pos);
if (showBbox)
g->DrawRectangle(&debugPen, bbox);
StringFormat rtl;
rtl.SetFormatFlags(StringFormatFlagsDirectionRightToLeft);
pos.X += bbox.Width;
g->DrawString(buf, strLen, font, pos, &rtl, &brText);
} else {
CrashIf(true);
}
if (abortCookie && *abortCookie)
break;
}
}