Method DrawWidget

src/textfile_gui.cpp:549–590

virtual */

}

/* virtual */ void TextfileWindow::DrawWidget(const Rect &r, WidgetID widget) const
{
	if (widget == WID_TF_CAPTION && std::size(this->lines) > 0 && this->reflow_iter != this->reflow_end) {
		/* Draw a progress bar in the caption. */
		Rect fr = r.Shrink(WidgetDimensions::scaled.captiontext).WithHeight(WidgetDimensions::scaled.vsep_normal, true);
		size_t remaining = std::distance(this->reflow_iter, this->reflow_end);
		fr = fr.WithWidth(static_cast<int>(remaining * fr.Width() / std::size(this->lines)), _current_text_dir != TD_RTL);
		GfxFillRect(fr, PC_WHITE, FILLRECT_CHECKER);
	}

	if (widget != WID_TF_BACKGROUND) return;

	Rect fr = r.Shrink(WidgetDimensions::scaled.frametext);

	DrawPixelInfo new_dpi;
	if (!FillDrawPixelInfo(&new_dpi, fr)) return;
	AutoRestoreBackup dpi_backup(_cur_dpi, &new_dpi);

	/* Draw content (now coordinates given to DrawString* are local to the new clipping region). */
	fr = fr.Translate(-fr.left, -fr.top);
	int line_height = GetCharacterHeight(FS_MONO);

	if (!this->IsTextWrapped()) fr = ScrollRect(fr, *this->hscroll, this->resize.step_width);

	int pos = this->vscroll->GetPosition();
	int cap = this->vscroll->GetCapacity();
	int cur_line = 0;
	for (auto &line : this->lines) {
		int top = cur_line;
		cur_line += line.num_lines;
		if (cur_line <= pos) continue;
		if (top > pos + cap) break;

		int y_offset = (top - pos) * line_height;
		if (line.wrapped_width != 0) {
			Rect tr = fr.WithWidth(line.wrapped_width, _current_text_dir == TD_RTL);
			DrawStringMultiLineWithClipping(tr.left, tr.right, y_offset, y_offset + line.num_lines * line_height, line.text, line.colour, SA_TOP | SA_LEFT, false, FS_MONO);
		} else {
			DrawString(fr.left, fr.right, y_offset, line.text, line.colour, SA_TOP | SA_LEFT, false, FS_MONO);
		}
	}
}

/* virtual */ void TextfileWindow::OnResize()
{