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Fixed get_size() for GtkCellRendererText to clip to the input area

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For ellipsize cells it's important to clip the result of get_size()
so that the returned required rectangle is indeed less than or equal
to the input rectangle... this is done so that GtkCellArea can accurately
paint focus on cells by calling gtk_cell_renderer_get_aligned_area().

Patch also adds assertions to gtk_cell_renderer_get_aligned_area() to
ensure this keeps working correctly.
This commit is contained in:
Tristan Van Berkom 2011-01-06 02:29:18 +09:00
parent e41fb7703c
commit 9a80100e9a
2 changed files with 14 additions and 6 deletions
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5
gtk/gtkcellrenderer.c
View File

@ -1657,4 +1657,9 @@ gtk_cell_renderer_get_aligned_area (GtkCellRenderer *cell,
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_aligned_area (cell, widget, flags, cell_area, aligned_area);
g_assert (aligned_area->x >= cell_area->x && aligned_area->x < cell_area->x + cell_area->width);
g_assert (aligned_area->y >= cell_area->y && aligned_area->y < cell_area->y + cell_area->height);
g_assert ((aligned_area->x - cell_area->x) + aligned_area->width <= cell_area->width);
g_assert ((aligned_area->y - cell_area->y) + aligned_area->height <= cell_area->height);
}

15
gtk/gtkcellrenderertext.c
View File

@ -1736,18 +1736,15 @@ get_size (GtkCellRenderer *cell,
pango_layout_get_pixel_extents (layout, NULL, &rect);
if (height)
*height = ypad * 2 + rect.height;
if (width)
*width = xpad * 2 + rect.x + rect.width;
if (cell_area)
{
gfloat xalign, yalign;
gtk_cell_renderer_get_alignment (cell, &xalign, &yalign);
rect.height = MIN (rect.height, cell_area->height - 2 * ypad);
rect.width = MIN (rect.width, cell_area->width - (2 * xpad) - rect.x);
if (x_offset)
{
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
@ -1770,6 +1767,12 @@ get_size (GtkCellRenderer *cell,
if (y_offset) *y_offset = 0;
}
if (height)
*height = ypad * 2 + rect.height;
if (width)
*width = xpad * 2 + rect.x + rect.width;
g_object_unref (layout);
}