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theme, frames: Use surface device scale instead of cairo_scale

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Gtk now is caching the themed cairo surfaces, then as per
commit gtk@e36b629c the surface device scale is used to figure
out the current paint scaling.

Without this when using background-image's for window buttons
the -gtk-scaled icons isn't properly resized.

Fixes #99


(cherry picked from commit 4339b23dd0)
This commit is contained in:
Marco Trevisan (Treviño) 2018-03-30 13:57:50 -05:00 committed by Marco Trevisan
parent 2a63a47d5a
commit fcd4c816c4
2 changed files with 22 additions and 4 deletions
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12
src/ui/frames.c
View File

@ -1330,7 +1330,9 @@ meta_ui_frame_get_mask (MetaUIFrame *frame,
MetaFrameBorders borders;
MetaFrameFlags flags;
MetaRectangle frame_rect;
int scale = meta_theme_get_window_scaling_factor ();
cairo_surface_t *surface;
double xscale, yscale;
int scale;
meta_window_get_frame_rect (frame->meta_window, &frame_rect);
@ -1340,7 +1342,11 @@ meta_ui_frame_get_mask (MetaUIFrame *frame,
meta_ui_frame_get_borders (frame, &borders);
/* See comment in meta_frame_layout_draw_with_style() for details on HiDPI handling */
cairo_scale (cr, scale, scale);
scale = meta_theme_get_window_scaling_factor ();
surface = cairo_get_target (cr);
cairo_surface_get_device_scale (surface, &xscale, &yscale);
cairo_surface_set_device_scale (surface, scale, scale);
gtk_render_background (frame->style_info->styles[META_STYLE_ELEMENT_FRAME], cr,
borders.invisible.left / scale,
borders.invisible.top / scale,
@ -1349,6 +1355,8 @@ meta_ui_frame_get_mask (MetaUIFrame *frame,
borders.invisible.left / scale,
borders.invisible.top / scale,
frame_rect.width / scale, borders.total.top / scale);
cairo_surface_set_device_scale (surface, xscale, yscale);
}
/* XXX -- this is disgusting. Find a better approach here.

14
src/ui/theme.c
View File

@ -736,7 +736,9 @@ meta_frame_layout_draw_with_style (MetaFrameLayout *layout,
GdkRectangle titlebar_rect;
GdkRectangle button_rect;
const MetaFrameBorders *borders;
int scale = meta_theme_get_window_scaling_factor ();
cairo_surface_t *frame_surface;
double xscale, yscale;
int scale;
/* We opt out of GTK+/Clutter's HiDPI handling, so we have to do the scaling
* ourselves; the nitty-gritty is a bit confusing, so here is an overview:
@ -748,8 +750,14 @@ meta_frame_layout_draw_with_style (MetaFrameLayout *layout,
* - for drawing, we scale the canvas to have GTK+ render elements (borders,
* radii, ...) at the correct scale - as a result, we have to "unscale"
* the geometry again to not apply the scaling twice
* - As per commit e36b629c GTK expects the device scale to be set and match
* the final scaling or the surface caching won't take this in account
* breaking -gtk-scaled items.
*/
cairo_scale (cr, scale, scale);
scale = meta_theme_get_window_scaling_factor ();
frame_surface = cairo_get_target (cr);
cairo_surface_get_device_scale (frame_surface, &xscale, &yscale);
cairo_surface_set_device_scale (frame_surface, scale, scale);
borders = &fgeom->borders;
@ -905,6 +913,8 @@ meta_frame_layout_draw_with_style (MetaFrameLayout *layout,
gtk_style_context_remove_class (style, button_class);
gtk_style_context_set_state (style, state);
}
cairo_surface_set_device_scale (frame_surface, xscale, yscale);
}
/**