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text: keep text confined within text-safe area

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This commit is contained in:
itsmattkc
2020-07-07 13:16:41 +10:00
parent 919314cce8
commit cb93b6bfa1
1 changed files with 22 additions and 11 deletions
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app/node/generator/text/text.cpp
+22 -11
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@@ -110,23 +110,34 @@ void TextGenerator::GenerateFrame(FramePtr frame, const GenerateJob& job) const
QTextDocument text_doc;
text_doc.setHtml(job.GetValue(text_input_).data().toString());
text_doc.setTextWidth(frame->video_params().width());
// Align to 80% width because that's considered the "title safe" area
int tenth_of_width = frame->video_params().width() / 10;
text_doc.setTextWidth(tenth_of_width * 8);
// Draw rich text onto image
QPainter p(&img);
p.scale(1.0 / frame->video_params().divider(), 1.0 / frame->video_params().divider());
TextVerticalAlign valign = static_cast<TextVerticalAlign>(job.GetValue(valign_input_).data().toInt());
if (valign != kVerticalAlignTop) {
int doc_height = text_doc.size().height();
// Push 10% inwards to compensate for title safe area
p.translate(tenth_of_width, 0);
if (valign == kVerticalAlignCenter) {
// Center align
p.translate(0, frame->video_params().height() / 2 - doc_height / 2);
} else {
// Must be bottom align
p.translate(0, frame->video_params().height() - doc_height);
}
TextVerticalAlign valign = static_cast<TextVerticalAlign>(job.GetValue(valign_input_).data().toInt());
int doc_height = text_doc.size().height();
switch (valign) {
case kVerticalAlignTop:
// Push 10% inwards for title safe area
p.translate(0, frame->video_params().height() / 10);
break;
case kVerticalAlignCenter:
// Center align
p.translate(0, frame->video_params().height() / 2 - doc_height / 2);
break;
case kVerticalAlignBottom:
// Push 10% inwards for title safe area
p.translate(0, frame->video_params().height() - doc_height - frame->video_params().height() / 10);
break;
}
text_doc.drawContents(&p);