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Use the surface output event to keep track of the suggested scale value

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The event will be sent when the surface becomes visible on an output. With this change the GdkMirWindowImpl keeps track of the scale value and sends a configure event on change.

Signed-off-by: Andreas Pokorny <andreas.pokorny@canonical.com>
This commit is contained in:
Andreas Pokorny 2016-07-19 14:56:34 +02:00 committed by William Hua
parent bdb77b6cc2
commit 252ccb846f
3 changed files with 54 additions and 2 deletions
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2
gdk/mir/gdkmir-private.h
View File

@ -89,6 +89,8 @@ void _gdk_mir_window_impl_set_surface_state (GdkMirWindowImpl *impl, MirSurfaceS
void _gdk_mir_window_impl_set_surface_type (GdkMirWindowImpl *impl, MirSurfaceType type);
void _gdk_mir_window_set_surface_output (GdkWindow *window, gdouble scale);
void _gdk_mir_window_impl_set_cursor_state (GdkMirWindowImpl *impl, gdouble x, gdouble y, gboolean cursor_inside, guint button_state);
void _gdk_mir_window_impl_get_cursor_state (GdkMirWindowImpl *impl, gdouble *x, gdouble *y, gboolean *cursor_inside, guint *button_state);

10
gdk/mir/gdkmireventsource.c
View File

@ -544,6 +544,13 @@ handle_close_event (GdkWindow *window)
gdk_window_destroy_notify (window);
}
static void
handle_surface_output_event (GdkWindow *window,
const MirSurfaceOutputEvent *event)
{
_gdk_mir_window_set_surface_output (window, mir_surface_output_event_get_scale (event));
}
typedef struct
{
GdkWindow *window;
@ -598,6 +605,9 @@ gdk_mir_event_source_queue_event (GdkDisplay *display,
case mir_event_type_close_surface:
handle_close_event (window);
break;
case mir_event_type_surface_output:
handle_surface_output_event (window, mir_event_get_surface_output_event (event));
break;
default:
g_warning ("Ignoring unknown Mir event %d", mir_event_get_type (event));
// FIXME?

44
gdk/mir/gdkmirwindowimpl.c
View File

@ -16,6 +16,7 @@
*/
#include <inttypes.h>
#include <math.h>
#include "config.h"
@ -65,6 +66,7 @@ struct _GdkMirWindowImpl
/* Surface being rendered to (only exists when window visible) */
MirSurface *surface;
MirBufferStream *buffer_stream;
/* Cairo context for current frame */
cairo_surface_t *cairo_surface;
@ -80,6 +82,8 @@ struct _GdkMirWindowImpl
/* TRUE if cursor is inside this window */
gboolean cursor_inside;
gint output_scale;
};
struct _GdkMirWindowImplClass
@ -91,6 +95,14 @@ G_DEFINE_TYPE (GdkMirWindowImpl, gdk_mir_window_impl, GDK_TYPE_WINDOW_IMPL)
static cairo_surface_t *gdk_mir_window_impl_ref_cairo_surface (GdkWindow *window);
static void
drop_cairo_surface (GdkWindow *window)
{
GdkMirWindowImpl *impl = GDK_MIR_WINDOW_IMPL (window->impl);
g_clear_pointer (&impl->cairo_surface, cairo_surface_destroy);
}
GdkWindowImpl *
_gdk_mir_window_impl_new (void)
{
@ -144,6 +156,7 @@ gdk_mir_window_impl_init (GdkMirWindowImpl *impl)
{
impl->type_hint = GDK_WINDOW_TYPE_HINT_NORMAL;
impl->surface_state = mir_surface_state_unknown;
impl->output_scale = 1;
}
static void
@ -356,6 +369,7 @@ ensure_surface_full (GdkWindow *window,
impl->has_rect ? &impl->rect : NULL,
impl->has_rect ? impl->edge : mir_edge_attachment_any,
buffer_usage);
impl->buffer_stream = mir_surface_get_buffer_stream (impl->surface);
/* FIXME: can't make an initial resize event */
// MirEvent *resize_event;
@ -448,6 +462,7 @@ gdk_mir_window_impl_ref_cairo_surface (GdkWindow *window)
if (window->gl_paint_context)
{
cairo_surface = cairo_image_surface_create (pixel_format, window->width, window->height);
cairo_surface_set_device_scale (cairo_surface, (double) impl->output_scale, (double) impl->output_scale);
}
else if (impl->visible)
{
@ -496,6 +511,7 @@ gdk_mir_window_impl_ref_cairo_surface (GdkWindow *window)
region.width,
region.height,
region.stride);
cairo_surface_set_device_scale (cairo_surface, (double) impl->output_scale, (double) impl->output_scale);
}
else
cairo_surface = cairo_image_surface_create (pixel_format, 0, 0);
@ -1344,8 +1360,8 @@ static gint
gdk_mir_window_impl_get_scale_factor (GdkWindow *window)
{
//g_printerr ("gdk_mir_window_impl_get_scale_factor window=%p\n", window);
/* Don't support monitor scaling */
return 1;
GdkMirWindowImpl *impl = GDK_MIR_WINDOW_IMPL (window->impl);
return impl->output_scale;
}
static void
@ -1603,6 +1619,30 @@ gdk_mir_window_get_mir_surface (GdkWindow *window)
return impl->surface;
}
void
_gdk_mir_window_set_surface_output (GdkWindow *window, gdouble scale)
{
// g_printerr ("_gdk_mir_window_impl_set_surface_output impl=%p\n", impl);
GdkMirWindowImpl *impl = GDK_MIR_WINDOW_IMPL (window->impl);
GdkRectangle area = {0, 0, window->width, window->height};
cairo_region_t *region;
gint new_scale = (gint) round (scale);
if (impl->output_scale != new_scale)
{
impl->output_scale = new_scale;
drop_cairo_surface (window);
if (impl->buffer_stream)
mir_buffer_stream_set_scale (impl->buffer_stream, (float) new_scale);
region = cairo_region_create_rectangle (&area);
_gdk_window_invalidate_for_expose (window, region);
cairo_region_destroy (region);
}
}
static void
gdk_mir_window_impl_class_init (GdkMirWindowImplClass *klass)
{