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https://github.com/brl/mutter.git
synced 2024-11-26 01:50:42 -05:00
monitor-manager: Remove 'scale' from MetaOutput
Replace the 'scale' of an output with a vfunc on the MetaMonitorManager class that takes a monitor and a monitor mode which calculates the scale. On X11 this always returns 1, on KMS, the old formula is used. On the dummy and test backends, the already configured values are returned. https://bugzilla.gnome.org/show_bug.cgi?id=777732
This commit is contained in:
Jonas Ådahl
parent
753e9c65a1
commit
a393a614a1
@ -100,13 +100,20 @@ meta_logical_monitor_new_derived (MetaMonitorManager *monitor_manager,
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{
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MetaLogicalMonitor *logical_monitor;
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MetaOutput *main_output;
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MetaMonitorMode *monitor_mode;
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int scale;
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logical_monitor = g_object_new (META_TYPE_LOGICAL_MONITOR, NULL);
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monitor_mode = meta_monitor_get_current_mode (monitor);
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scale = meta_monitor_manager_calculate_monitor_mode_scale (monitor_manager,
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monitor,
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monitor_mode);
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main_output = meta_monitor_get_main_output (monitor);
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logical_monitor->number = monitor_number;
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logical_monitor->winsys_id = main_output->winsys_id;
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logical_monitor->scale = main_output->scale;
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logical_monitor->scale = scale;
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logical_monitor->in_fullscreen = -1;
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logical_monitor->rect = *layout;
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@ -461,7 +461,8 @@ create_monitor_config (MetaMonitor *monitor,
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}
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static MetaLogicalMonitorConfig *
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create_preferred_logical_monitor_config (MetaMonitor *monitor,
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create_preferred_logical_monitor_config (MetaMonitorManager *monitor_manager,
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MetaMonitor *monitor,
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int x,
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int y)
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{
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@ -473,7 +474,9 @@ create_preferred_logical_monitor_config (MetaMonitor *monitor,
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mode = meta_monitor_get_preferred_mode (monitor);
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meta_monitor_mode_get_resolution (mode, &width, &height);
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scale = meta_monitor_get_calculated_scale (monitor);
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scale = meta_monitor_manager_calculate_monitor_mode_scale (monitor_manager,
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monitor,
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mode);
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monitor_config = create_monitor_config (monitor, mode);
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@ -508,7 +511,9 @@ meta_monitor_config_manager_create_linear (MetaMonitorConfigManager *config_mana
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return NULL;
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primary_logical_monitor_config =
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create_preferred_logical_monitor_config (primary_monitor, 0, 0);
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create_preferred_logical_monitor_config (monitor_manager,
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primary_monitor,
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0, 0);
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primary_logical_monitor_config->is_primary = TRUE;
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logical_monitor_configs = g_list_append (NULL,
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primary_logical_monitor_config);
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@ -528,7 +533,9 @@ meta_monitor_config_manager_create_linear (MetaMonitorConfigManager *config_mana
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continue;
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logical_monitor_config =
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create_preferred_logical_monitor_config (monitor, x, 0);
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create_preferred_logical_monitor_config (monitor_manager,
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monitor,
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x, 0);
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logical_monitor_configs = g_list_append (logical_monitor_configs,
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logical_monitor_config);
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@ -551,7 +558,9 @@ meta_monitor_config_manager_create_fallback (MetaMonitorConfigManager *config_ma
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return NULL;
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primary_logical_monitor_config =
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create_preferred_logical_monitor_config (primary_monitor, 0, 0);
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create_preferred_logical_monitor_config (monitor_manager,
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primary_monitor,
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0, 0);
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primary_logical_monitor_config->is_primary = TRUE;
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logical_monitor_configs = g_list_append (NULL,
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primary_logical_monitor_config);
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@ -587,7 +596,9 @@ meta_monitor_config_manager_create_suggested (MetaMonitorConfigManager *config_m
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continue;
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logical_monitor_config =
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create_preferred_logical_monitor_config (monitor, x, y);
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create_preferred_logical_monitor_config (monitor_manager,
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monitor,
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x, y);
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logical_monitor_configs = g_list_append (logical_monitor_configs,
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logical_monitor_config);
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@ -51,8 +51,16 @@ struct _MetaMonitorManagerDummyClass
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MetaMonitorManagerClass parent_class;
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};
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typedef struct _MetaOutputDummy
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{
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int scale;
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} MetaOutputDummy;
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G_DEFINE_TYPE (MetaMonitorManagerDummy, meta_monitor_manager_dummy, META_TYPE_MONITOR_MANAGER);
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static void
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meta_output_dummy_notify_destroy (MetaOutput *output);
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#define array_last(a, t) \
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g_array_index (a, t, a->len - 1)
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@ -75,6 +83,7 @@ append_monitor (GArray *modes,
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}
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};
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MetaCrtc crtc;
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MetaOutputDummy *output_dummy;
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MetaOutput output;
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unsigned int i;
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@ -88,6 +97,11 @@ append_monitor (GArray *modes,
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};
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g_array_append_val (crtcs, crtc);
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output_dummy = g_new0 (MetaOutputDummy, 1);
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*output_dummy = (MetaOutputDummy) {
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.scale = scale
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};
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output = (MetaOutput) {
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.winsys_id = outputs->len + 1,
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.name = g_strdup_printf ("LVDS%d", outputs->len + 1),
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@ -103,7 +117,9 @@ append_monitor (GArray *modes,
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.n_possible_clones = 0,
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.backlight = -1,
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.connector_type = META_CONNECTOR_TYPE_LVDS,
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.scale = scale,
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.driver_private = output_dummy,
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.driver_notify =
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(GDestroyNotify) meta_output_dummy_notify_destroy
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};
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output.modes = g_new0 (MetaCrtcMode *, G_N_ELEMENTS (modes_decl));
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@ -159,9 +175,15 @@ append_tiled_monitor (GArray *modes,
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tile_group_id = outputs->len + 1;
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for (i = 0; i < G_N_ELEMENTS (crtcs_decl); i++)
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{
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MetaOutputDummy *output_dummy;
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MetaCrtcMode *preferred_mode;
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unsigned int j;
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output_dummy = g_new0 (MetaOutputDummy, 1);
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*output_dummy = (MetaOutputDummy) {
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.scale = scale
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};
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preferred_mode = &array_last (modes, MetaCrtcMode),
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output = (MetaOutput) {
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.winsys_id = outputs->len + 1,
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@ -187,7 +209,9 @@ append_tiled_monitor (GArray *modes,
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.tile_w = preferred_mode->width,
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.tile_h = preferred_mode->height
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},
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.scale = scale
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.driver_private = output_dummy,
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.driver_notify =
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(GDestroyNotify) meta_output_dummy_notify_destroy
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};
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output.modes = g_new0 (MetaCrtcMode *, G_N_ELEMENTS (modes_decl));
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@ -206,6 +230,12 @@ append_tiled_monitor (GArray *modes,
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}
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}
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static void
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meta_output_dummy_notify_destroy (MetaOutput *output)
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{
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g_clear_pointer (&output->driver_private, g_free);
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}
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static void
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meta_monitor_manager_dummy_read_current (MetaMonitorManager *manager)
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{
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@ -533,6 +563,20 @@ meta_monitor_manager_dummy_is_transform_handled (MetaMonitorManager *manager,
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return manager_dummy->is_transform_handled;
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}
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static int
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meta_monitor_manager_dummy_calculate_monitor_mode_scale (MetaMonitorManager *manager,
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MetaMonitor *monitor,
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MetaMonitorMode *monitor_mode)
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{
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MetaOutput *output;
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MetaOutputDummy *output_dummy;
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output = meta_monitor_get_main_output (monitor);
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output_dummy = output->driver_private;
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return output_dummy->scale;
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}
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static void
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meta_monitor_manager_dummy_class_init (MetaMonitorManagerDummyClass *klass)
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{
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@ -543,6 +587,7 @@ meta_monitor_manager_dummy_class_init (MetaMonitorManagerDummyClass *klass)
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manager_class->apply_monitors_config = meta_monitor_manager_dummy_apply_monitors_config;
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manager_class->apply_configuration = meta_monitor_manager_dummy_apply_config;
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manager_class->is_transform_handled = meta_monitor_manager_dummy_is_transform_handled;
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manager_class->calculate_monitor_mode_scale = meta_monitor_manager_dummy_calculate_monitor_mode_scale;
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}
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static void
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@ -59,6 +59,8 @@ typedef struct _MetaMonitorTiled MetaMonitorTiled;
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typedef struct _MetaMonitorSpec MetaMonitorSpec;
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typedef struct _MetaLogicalMonitor MetaLogicalMonitor;
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typedef struct _MetaMonitorMode MetaMonitorMode;
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typedef struct _MetaCrtc MetaCrtc;
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typedef struct _MetaOutput MetaOutput;
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typedef struct _MetaCrtcMode MetaCrtcMode;
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@ -125,7 +127,6 @@ struct _MetaOutput
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int width_mm;
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int height_mm;
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CoglSubpixelOrder subpixel_order;
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int scale;
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MetaConnectorType connector_type;
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@ -348,6 +349,10 @@ struct _MetaMonitorManagerClass
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gboolean (*is_transform_handled) (MetaMonitorManager *,
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MetaCrtc *,
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MetaMonitorTransform);
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int (*calculate_monitor_mode_scale) (MetaMonitorManager *,
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MetaMonitor *,
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MetaMonitorMode *);
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};
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void meta_monitor_manager_rebuild (MetaMonitorManager *manager,
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@ -447,6 +452,10 @@ void meta_monitor_manager_lid_is_closed_changed (MetaMonitorManage
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gboolean meta_monitor_manager_is_headless (MetaMonitorManager *manager);
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int meta_monitor_manager_calculate_monitor_mode_scale (MetaMonitorManager *manager,
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MetaMonitor *monitor,
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MetaMonitorMode *monitor_mode);
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void meta_monitor_manager_clear_output (MetaOutput *output);
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void meta_monitor_manager_clear_mode (MetaCrtcMode *mode);
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void meta_monitor_manager_clear_crtc (MetaCrtc *crtc);
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@ -275,6 +275,19 @@ meta_monitor_manager_is_headless (MetaMonitorManager *manager)
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return !manager->monitors;
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}
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int
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meta_monitor_manager_calculate_monitor_mode_scale (MetaMonitorManager *manager,
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MetaMonitor *monitor,
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MetaMonitorMode *monitor_mode)
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{
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MetaMonitorManagerClass *manager_class =
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META_MONITOR_MANAGER_GET_CLASS (manager);
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return manager_class->calculate_monitor_mode_scale (manager,
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monitor,
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monitor_mode);
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}
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static void
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meta_monitor_manager_ensure_initial_config (MetaMonitorManager *manager)
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{
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@ -196,16 +196,6 @@ meta_monitor_is_underscanning (MetaMonitor *monitor)
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return output->is_underscanning;
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}
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int
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meta_monitor_get_calculated_scale (MetaMonitor *monitor)
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{
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MetaOutput *output;
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output = meta_monitor_get_main_output (monitor);
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return output->scale;
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}
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gboolean
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meta_monitor_is_laptop_panel (MetaMonitor *monitor)
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{
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@ -291,6 +281,15 @@ meta_monitor_get_serial (MetaMonitor *monitor)
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return output->serial;
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}
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MetaConnectorType
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meta_monitor_get_connector_type (MetaMonitor *monitor)
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{
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MetaOutput *output;
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output = meta_monitor_get_main_output (monitor);
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return output->connector_type;
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}
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static void
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meta_monitor_finalize (GObject *object)
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{
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@ -26,8 +26,6 @@
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#include "backends/meta-monitor-manager-private.h"
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typedef struct _MetaMonitorMode MetaMonitorMode;
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typedef struct _MetaMonitorSpec
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{
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char *connector;
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@ -97,8 +95,6 @@ gboolean meta_monitor_is_underscanning (MetaMonitor *monitor);
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gboolean meta_monitor_is_laptop_panel (MetaMonitor *monitor);
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int meta_monitor_get_calculated_scale (MetaMonitor *monitor);
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GList * meta_monitor_get_outputs (MetaMonitor *monitor);
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void meta_monitor_get_current_resolution (MetaMonitor *monitor,
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@ -121,6 +117,8 @@ const char * meta_monitor_get_product (MetaMonitor *monitor);
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const char * meta_monitor_get_serial (MetaMonitor *monitor);
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MetaConnectorType meta_monitor_get_connector_type (MetaMonitor *monitor);
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uint32_t meta_monitor_tiled_get_tile_group_id (MetaMonitorTiled *monitor_tiled);
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gboolean meta_monitor_get_suggested_position (MetaMonitor *monitor,
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@ -483,85 +483,6 @@ find_output_by_id (MetaOutput *outputs,
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return NULL;
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}
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/* The minimum resolution at which we turn on a window-scale of 2 */
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#define HIDPI_LIMIT 192
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/* The minimum screen height at which we turn on a window-scale of 2;
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* below this there just isn't enough vertical real estate for GNOME
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* apps to work, and it's better to just be tiny */
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#define HIDPI_MIN_HEIGHT 1200
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/* From http://en.wikipedia.org/wiki/4K_resolution#Resolutions_of_common_formats */
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#define SMALLEST_4K_WIDTH 3656
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/* Based on code from gnome-settings-daemon */
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static int
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compute_scale (MetaOutput *output)
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{
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int scale = 1, width, height;
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if (!output->crtc)
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goto out;
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width = output->crtc->rect.width;
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height = output->crtc->rect.height;
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/* Swap values on rotated transforms, so pixel and mm sizes
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* from the same axes is compared.
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*/
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if (meta_monitor_transform_is_rotated (output->crtc->transform))
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{
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int tmp = width;
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width = height;
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height = tmp;
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}
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/* Scaling makes no sense */
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if (height < HIDPI_MIN_HEIGHT)
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goto out;
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/* 4K TV */
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if (output->name != NULL && strstr(output->name, "HDMI") != NULL &&
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width >= SMALLEST_4K_WIDTH)
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goto out;
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/* Somebody encoded the aspect ratio (16/9 or 16/10)
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* instead of the physical size */
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if ((output->width_mm == 160 && output->height_mm == 90) ||
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(output->width_mm == 160 && output->height_mm == 100) ||
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(output->width_mm == 16 && output->height_mm == 9) ||
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(output->width_mm == 16 && output->height_mm == 10))
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goto out;
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if (output->width_mm > 0 && output->height_mm > 0)
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{
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double dpi_x, dpi_y;
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dpi_x = (double)width / (output->width_mm / 25.4);
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dpi_y = (double)height / (output->height_mm / 25.4);
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/* We don't completely trust these values so both
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must be high, and never pick higher ratio than
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2 automatically */
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if (dpi_x > HIDPI_LIMIT && dpi_y > HIDPI_LIMIT)
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scale = 2;
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}
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out:
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return scale;
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}
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static int
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get_output_scale (MetaMonitorManager *manager,
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MetaOutput *output)
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{
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MetaMonitorManagerKms *manager_kms = META_MONITOR_MANAGER_KMS (manager);
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int scale = g_settings_get_uint (manager_kms->desktop_settings, "scaling-factor");
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if (scale > 0)
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return scale;
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else
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return compute_scale (output);
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}
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static int
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find_property_index (MetaMonitorManager *manager,
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drmModeObjectPropertiesPtr props,
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@ -930,8 +851,6 @@ init_output (MetaOutput *output,
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/* MetaConnectorType matches DRM's connector types */
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output->connector_type = (MetaConnectorType) connector->connector_type;
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output->scale = get_output_scale (manager, output);
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output_get_tile_info (manager_kms, output);
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/* FIXME: backlight is a very driver specific thing unfortunately,
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@ -1399,7 +1318,6 @@ apply_crtc_assignments (MetaMonitorManager *manager,
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output->is_dirty = TRUE;
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output->crtc = crtc;
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output->scale = get_output_scale (manager, output);
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}
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}
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@ -1898,6 +1816,93 @@ meta_monitor_manager_kms_is_transform_handled (MetaMonitorManager *manager,
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return FALSE;
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}
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/* The minimum resolution at which we turn on a window-scale of 2 */
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#define HIDPI_LIMIT 192
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/* The minimum screen height at which we turn on a window-scale of 2;
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* below this there just isn't enough vertical real estate for GNOME
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* apps to work, and it's better to just be tiny */
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#define HIDPI_MIN_HEIGHT 1200
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/* From http://en.wikipedia.org/wiki/4K_resolution#Resolutions_of_common_formats */
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#define SMALLEST_4K_WIDTH 3656
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static int
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compute_scale (MetaMonitor *monitor,
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MetaMonitorMode *monitor_mode)
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{
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int resolution_width, resolution_height;
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int width_mm, height_mm;
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int scale;
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scale = 1;
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meta_monitor_mode_get_resolution (monitor_mode,
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&resolution_width,
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&resolution_height);
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if (resolution_height < HIDPI_MIN_HEIGHT)
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goto out;
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/* 4K TV */
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switch (meta_monitor_get_connector_type (monitor))
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{
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case META_CONNECTOR_TYPE_HDMIA:
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case META_CONNECTOR_TYPE_HDMIB:
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if (resolution_width >= SMALLEST_4K_WIDTH)
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goto out;
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break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
meta_monitor_get_physical_dimensions (monitor, &width_mm, &height_mm);
|
||||
|
||||
/*
|
||||
* Somebody encoded the aspect ratio (16/9 or 16/10) instead of the physical
|
||||
* size.
|
||||
*/
|
||||
if ((width_mm == 160 && height_mm == 90) ||
|
||||
(width_mm == 160 && height_mm == 100) ||
|
||||
(width_mm == 16 && height_mm == 9) ||
|
||||
(width_mm == 16 && height_mm == 10))
|
||||
goto out;
|
||||
|
||||
if (width_mm > 0 && height_mm > 0)
|
||||
{
|
||||
double dpi_x, dpi_y;
|
||||
|
||||
dpi_x = (double) resolution_width / (width_mm / 25.4);
|
||||
dpi_y = (double) resolution_height / (height_mm / 25.4);
|
||||
|
||||
/*
|
||||
* We don't completely trust these values so both must be high, and never
|
||||
* pick higher ratio than 2 automatically.
|
||||
*/
|
||||
if (dpi_x > HIDPI_LIMIT && dpi_y > HIDPI_LIMIT)
|
||||
scale = 2;
|
||||
}
|
||||
|
||||
out:
|
||||
return scale;
|
||||
}
|
||||
|
||||
static int
|
||||
meta_monitor_manager_kms_calculate_monitor_mode_scale (MetaMonitorManager *manager,
|
||||
MetaMonitor *monitor,
|
||||
MetaMonitorMode *monitor_mode)
|
||||
{
|
||||
MetaMonitorManagerKms *manager_kms = META_MONITOR_MANAGER_KMS (manager);
|
||||
int global_scale;
|
||||
|
||||
global_scale = g_settings_get_uint (manager_kms->desktop_settings,
|
||||
"scaling-factor");
|
||||
if (global_scale > 0)
|
||||
return global_scale;
|
||||
else
|
||||
return compute_scale (monitor, monitor_mode);
|
||||
}
|
||||
|
||||
static void
|
||||
meta_monitor_manager_kms_dispose (GObject *object)
|
||||
{
|
||||
@ -1938,4 +1943,5 @@ meta_monitor_manager_kms_class_init (MetaMonitorManagerKmsClass *klass)
|
||||
manager_class->get_crtc_gamma = meta_monitor_manager_kms_get_crtc_gamma;
|
||||
manager_class->set_crtc_gamma = meta_monitor_manager_kms_set_crtc_gamma;
|
||||
manager_class->is_transform_handled = meta_monitor_manager_kms_is_transform_handled;
|
||||
manager_class->calculate_monitor_mode_scale = meta_monitor_manager_kms_calculate_monitor_mode_scale;
|
||||
}
|
||||
|
||||
@ -1568,6 +1568,15 @@ meta_monitor_manager_xrandr_is_transform_handled (MetaMonitorManager *manager,
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static int
|
||||
meta_monitor_manager_xrandr_calculate_monitor_mode_scale (MetaMonitorManager *manager,
|
||||
MetaMonitor *monitor,
|
||||
MetaMonitorMode *monitor_mode)
|
||||
{
|
||||
/* X11 does not support anything other than scale 1. */
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void
|
||||
meta_monitor_manager_xrandr_init (MetaMonitorManagerXrandr *manager_xrandr)
|
||||
{
|
||||
@ -1644,6 +1653,7 @@ meta_monitor_manager_xrandr_class_init (MetaMonitorManagerXrandrClass *klass)
|
||||
manager_class->tiled_monitor_removed = meta_monitor_manager_xrandr_tiled_monitor_removed;
|
||||
#endif
|
||||
manager_class->is_transform_handled = meta_monitor_manager_xrandr_is_transform_handled;
|
||||
manager_class->calculate_monitor_mode_scale = meta_monitor_manager_xrandr_calculate_monitor_mode_scale;
|
||||
|
||||
quark_meta_monitor_xrandr_data =
|
||||
g_quark_from_static_string ("-meta-monitor-xrandr-data");
|
||||
|
||||
@ -335,6 +335,20 @@ meta_monitor_manager_test_is_transform_handled (MetaMonitorManager *manager,
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static int
|
||||
meta_monitor_manager_test_calculate_monitor_mode_scale (MetaMonitorManager *manager,
|
||||
MetaMonitor *monitor,
|
||||
MetaMonitorMode *monitor_mode)
|
||||
{
|
||||
MetaOutput *output;
|
||||
MetaOutputTest *output_test;
|
||||
|
||||
output = meta_monitor_get_main_output (monitor);
|
||||
output_test = output->driver_private;
|
||||
|
||||
return output_test->scale;
|
||||
}
|
||||
|
||||
static void
|
||||
meta_monitor_manager_test_dispose (GObject *object)
|
||||
{
|
||||
@ -367,4 +381,5 @@ meta_monitor_manager_test_class_init (MetaMonitorManagerTestClass *klass)
|
||||
manager_class->tiled_monitor_added = meta_monitor_manager_test_tiled_monitor_added;
|
||||
manager_class->tiled_monitor_removed = meta_monitor_manager_test_tiled_monitor_removed;
|
||||
manager_class->is_transform_handled = meta_monitor_manager_test_is_transform_handled;
|
||||
manager_class->calculate_monitor_mode_scale = meta_monitor_manager_test_calculate_monitor_mode_scale;
|
||||
}
|
||||
|
||||
@ -32,6 +32,11 @@ typedef struct _MetaMonitorTestSetup
|
||||
int n_crtcs;
|
||||
} MetaMonitorTestSetup;
|
||||
|
||||
typedef struct _MetaOutputTest
|
||||
{
|
||||
int scale;
|
||||
} MetaOutputTest;
|
||||
|
||||
#define META_TYPE_MONITOR_MANAGER_TEST (meta_monitor_manager_test_get_type ())
|
||||
G_DECLARE_FINAL_TYPE (MetaMonitorManagerTest, meta_monitor_manager_test,
|
||||
META, MONITOR_MANAGER_TEST, MetaMonitorManager)
|
||||
|
||||
@ -658,6 +658,12 @@ check_monitor_configuration (MonitorTestCase *test_case)
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
meta_output_test_destroy_notify (MetaOutput *output)
|
||||
{
|
||||
g_clear_pointer (&output->driver_private, g_free);
|
||||
}
|
||||
|
||||
static MetaMonitorTestSetup *
|
||||
create_monitor_test_setup (MonitorTestCase *test_case,
|
||||
MonitorTestFlag flags)
|
||||
@ -712,6 +718,7 @@ create_monitor_test_setup (MonitorTestCase *test_case,
|
||||
test_setup->outputs = g_new0 (MetaOutput, test_setup->n_outputs);
|
||||
for (i = 0; i < test_setup->n_outputs; i++)
|
||||
{
|
||||
MetaOutputTest *output_test;
|
||||
int crtc_index;
|
||||
MetaCrtc *crtc;
|
||||
int preferred_mode_index;
|
||||
@ -756,10 +763,16 @@ create_monitor_test_setup (MonitorTestCase *test_case,
|
||||
possible_crtcs[j] = &test_setup->crtcs[possible_crtc_index];
|
||||
}
|
||||
|
||||
output_test = g_new0 (MetaOutputTest, 1);
|
||||
|
||||
scale = test_case->setup.outputs[i].scale;
|
||||
if (scale < 1)
|
||||
scale = 1;
|
||||
|
||||
*output_test = (MetaOutputTest) {
|
||||
.scale = scale
|
||||
};
|
||||
|
||||
is_laptop_panel = test_case->setup.outputs[i].is_laptop_panel;
|
||||
|
||||
test_setup->outputs[i] = (MetaOutput) {
|
||||
@ -789,8 +802,9 @@ create_monitor_test_setup (MonitorTestCase *test_case,
|
||||
.connector_type = (is_laptop_panel ? META_CONNECTOR_TYPE_eDP
|
||||
: META_CONNECTOR_TYPE_DisplayPort),
|
||||
.tile_info = test_case->setup.outputs[i].tile_info,
|
||||
.scale = scale,
|
||||
.is_underscanning = test_case->setup.outputs[i].is_underscanning
|
||||
.is_underscanning = test_case->setup.outputs[i].is_underscanning,
|
||||
.driver_private = output_test,
|
||||
.driver_notify = (GDestroyNotify) meta_output_test_destroy_notify
|
||||
};
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user