viewertexteditor: paint to pixmap then copy to screen

2022-08-21 15:00:32 -07:00
parent b361ba8c51
commit e55da211b1
4 changed files with 236 additions and 130 deletions
@@ -93,16 +93,13 @@ void ViewerTextEditor::ConnectToolBar(ViewerTextEditorToolBar *toolbar)
  toolbars_.append(toolbar);
 }

-void ViewerTextEditor::paintEvent(QPaintEvent *e)
+void ViewerTextEditor::Paint(QPainter *p, const QRect &clip)
 {
-  QPainter p(this->viewport());
-
  QAbstractTextDocumentLayout::PaintContext ctx;

-  QRect r = e->rect();
-  if (r.isValid())
-    p.setClipRect(r, Qt::IntersectClip);
-  ctx.clip = r;
+  if (clip.isValid())
+    p->setClipRect(clip, Qt::IntersectClip);
+  ctx.clip = clip;

  ctx.cursorPosition = this->textCursor().position();

@@ -125,10 +122,18 @@ void ViewerTextEditor::paintEvent(QPaintEvent *e)
  }

  if (transparent_clone_) {
-    transparent_clone_->documentLayout()->draw(&p, ctx);
+    transparent_clone_->documentLayout()->draw(p, ctx);
  }
 }

+void ViewerTextEditor::paintEvent(QPaintEvent *e)
+{
+  return;
+  QPainter p(viewport());
+
+  Paint(&p, e->rect());
+}
+
 void ViewerTextEditor::UpdateToolBar(ViewerTextEditorToolBar *toolbar, const QTextCharFormat &f, const QTextBlockFormat &b, Qt::Alignment alignment)
 {
  QFontDatabase fd;