windows下用pango, 字符的位置不对

发布于 2022-08-18 23:42:47 字数 6169 浏览 6 评论 4

我在位置（100， 100）绘制布局。背景色和下划线的位置是对的，但字符画到下一行去了，不知道是不是pango的bug.附件是代码和图片。核心代码如下：

case WM_PAINT:
      hdc = BeginPaint(hWnd, &ps);
      {
         PangoFontMap* fontmap = pango_win32_font_map_for_display ();
         PangoContext* context = pango_font_map_create_context (fontmap);
         PangoLayout* layout = pango_layout_new (context);
         PangoFont* font = NULL;
         PangoAttrList* attrList = pango_attr_list_new ();
         PangoAttribute* attr ;

PangoFontDescription* fontDesc = pango_font_description_new ();
pango_font_description_set_size (fontDesc, 40*PANGO_SCALE);

         pango_layout_set_font_description (layout, fontDesc);
         readFile();
         //pango_layout_set_text (layout, textBuf, -1);

         attr = pango_attr_underline_new (PANGO_UNDERLINE_LOW);
         pango_attr_list_insert(attrList, attr);
         pango_layout_set_attributes (layout, attrList);
         pango_layout_set_markup (layout, textBuf, -1);
         SetTextColor(hdc,RGB(255,0,0));
         MoveToEx (hdc, 0, 0, NULL);
         LineTo (hdc, 100, 0);
         MyTrace ("paint  rotation %dn", rotation);
         SetBkMode (hdc, TRANSPARENT);
         drawLayout (hdc, layout, 100, 100, 1, 1, rotation);
      }

EndPaint(hWnd, &ps);
break;

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酷炫老祖宗 2022-08-28 10:56:14

帮顶~~~

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凉宸 2022-08-28 10:51:35

pango颜色的错误。是pango_win32_render_layout_line 这个函数中

      if (bg_set)
      {
         HBRUSH oldbrush;

         brush = CreateSolidBrush (RGB ((bg_color.color.red + 128) >> 8,
                     (bg_color.color.green + 128) >> 8,
                     (bg_color.color.blue + 128) >> 8));
         oldbrush = SelectObject (hdc, brush);
         Rectangle (hdc, x + PANGO_PIXELS (x_off + logical_rect.x),
                  y + PANGO_PIXELS (overall_rect.y),
                  PANGO_PIXELS (logical_rect.width),
                  PANGO_PIXELS (overall_rect.height));
         SelectObject (hdc, oldbrush);
         DeleteObject (brush);
      }

      if (fg_set)
      {
         brush = CreateSolidBrush (RGB ((fg_color.color.red + 128) >> 8,
                     (fg_color.color.green + 128) >> 8,
                     (fg_color.color.blue + 128) >> 8));
         oldfg = SelectObject (hdc, brush);
      }

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水溶 2022-08-28 10:31:26

pango颜色的错误。是pango_win32_render_layout_line 这个函数中

if (bg_set) { HBRUSH oldbrush; brush = CreateSolidBrush (RGB ((bg_color.color.red + 12

>> 8, (bg_color.color.green + 12

>> 8, (bg_color.color.blue + 12

); oldbrush = SelectObject (hdc, brush); Rectangle (hdc, x + PANGO_PIXELS (x_off + logical_rect.x), y + PANGO_PIXELS (overall_rect.y), PANGO_PIXELS (logical_rect.width), PANGO_PIXELS (overall_rect.height)); SelectObject (hdc, oldbrush); DeleteObject (brush); } if (fg_set) { brush = CreateSolidBrush (RGB ((fg_color.color.red + 12

>> 8, (fg_color.color.green + 12

>> 8, (fg_color.color.blue + 12

); oldfg = SelectObject (hdc, brush); }

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