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monitor-manager: Refactor tiled monitor assembly code

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Refactor the tiled monitor assembly code (that constructs a logical
monitor out of tiling information. Part of the reason is to move away
from array based storage, part is to make the code easier to follow,
and part is to separate logical monitor construction from list
manipulation.

https://bugzilla.gnome.org/show_bug.cgi?id=777732
This commit is contained in:
Jonas Ådahl 2016-12-02 15:48:53 +08:00
parent 016359ede2
commit 20b8743f21
1 changed files with 81 additions and 75 deletions
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168
src/backends/meta-monitor-manager.c
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@ -71,98 +71,91 @@ meta_monitor_manager_init (MetaMonitorManager *manager)
{
}
/*
* rules for constructing a tiled monitor
* 1. find a tile_group_id
* 2. iterate over all outputs for that tile group id
* 3. see if output has a crtc and if it is configured for the tile size
* 4. calculate the total tile size
* 5. set tile finished size
* 6. check for more tile_group_id
*/
static void
construct_tile_monitor (MetaMonitorManager *manager,
GArray *logical_monitors,
uint32_t tile_group_id)
static gboolean
is_main_tiled_monitor_output (MetaOutput *output)
{
MetaLogicalMonitor new_logical_monitor;
unsigned i;
for (i = 0; i < logical_monitors->len; i++)
{
MetaLogicalMonitor *logical_monitor = &g_array_index (logical_monitors,
MetaLogicalMonitor,
i);
if (logical_monitor->tile_group_id == tile_group_id)
return;
return output->tile_info.loc_h_tile == 0 && output->tile_info.loc_v_tile == 0;
}
/* didn't find it */
new_logical_monitor.number = logical_monitors->len;
new_logical_monitor.tile_group_id = tile_group_id;
new_logical_monitor.is_presentation = FALSE;
new_logical_monitor.refresh_rate = 0.0;
new_logical_monitor.width_mm = 0;
new_logical_monitor.height_mm = 0;
new_logical_monitor.is_primary = FALSE;
new_logical_monitor.rect.x = INT_MAX;
new_logical_monitor.rect.y = INT_MAX;
new_logical_monitor.rect.width = 0;
new_logical_monitor.rect.height = 0;
new_logical_monitor.winsys_id = 0;
new_logical_monitor.n_outputs = 0;
new_logical_monitor.monitor_winsys_xid = 0;
static void
calculate_tiled_monitor_size (MetaMonitorManager *manager,
uint32_t tile_group_id,
int *out_width,
int *out_height)
{
int width, height;
unsigned int i;
width = 0;
height = 0;
for (i = 0; i < manager->n_outputs; i++)
{
MetaOutput *output = &manager->outputs[i];
if (output->tile_info.group_id != tile_group_id)
continue;
if (output->tile_info.loc_v_tile == 0)
width += output->tile_info.tile_w;
if (output->tile_info.loc_h_tile == 0)
height += output->tile_info.tile_h;
}
*out_width = width;
*out_height = height;
}
static void
add_tiled_monitor_outputs (MetaMonitorManager *manager,
MetaLogicalMonitor *logical_monitor,
uint32_t tile_group_id)
{
unsigned int i;
for (i = 0; i < manager->n_outputs; i++)
{
MetaOutput *output = &manager->outputs[i];
if (!output->tile_info.group_id)
continue;
if (output->tile_info.group_id != tile_group_id)
continue;
if (!output->crtc)
continue;
if (output->crtc->rect.width != (int)output->tile_info.tile_w ||
output->crtc->rect.height != (int)output->tile_info.tile_h)
continue;
if (output->tile_info.loc_h_tile == 0 && output->tile_info.loc_v_tile == 0)
if (logical_monitor->n_outputs > META_MAX_OUTPUTS_PER_MONITOR)
{
new_logical_monitor.refresh_rate = output->crtc->current_mode->refresh_rate;
new_logical_monitor.width_mm = output->width_mm;
new_logical_monitor.height_mm = output->height_mm;
new_logical_monitor.winsys_id = output->winsys_id;
}
/* hack */
if (output->crtc->rect.x < new_logical_monitor.rect.x)
new_logical_monitor.rect.x = output->crtc->rect.x;
if (output->crtc->rect.y < new_logical_monitor.rect.y)
new_logical_monitor.rect.y = output->crtc->rect.y;
if (output->tile_info.loc_h_tile == 0)
new_logical_monitor.rect.height += output->tile_info.tile_h;
if (output->tile_info.loc_v_tile == 0)
new_logical_monitor.rect.width += output->tile_info.tile_w;
if (new_logical_monitor.n_outputs > META_MAX_OUTPUTS_PER_MONITOR)
continue;
new_logical_monitor.outputs[new_logical_monitor.n_outputs++] = output;
}
/* if we don't have a winsys id, i.e. we haven't found tile 0,0
don't try and add this to the monitor infos */
if (!new_logical_monitor.winsys_id)
g_warning ("Couldn't add all outputs to monitor");
return;
}
g_array_append_val (logical_monitors, new_logical_monitor);
logical_monitor->outputs[logical_monitor->n_outputs] = output;
logical_monitor->n_outputs++;
}
}
static MetaLogicalMonitor *
construct_tile_monitor (MetaMonitorManager *manager,
MetaOutput *output,
int monitor_number)
{
MetaLogicalMonitor *logical_monitor = NULL;
logical_monitor = g_new0 (MetaLogicalMonitor, 1);
logical_monitor->tile_group_id = output->tile_info.group_id;
logical_monitor->refresh_rate = output->crtc->current_mode->refresh_rate;
logical_monitor->width_mm = output->width_mm;
logical_monitor->height_mm = output->height_mm;
logical_monitor->winsys_id = output->winsys_id;
logical_monitor->rect.x = output->crtc->rect.x;
logical_monitor->rect.y = output->crtc->rect.y;
calculate_tiled_monitor_size (manager, output->tile_info.group_id,
&logical_monitor->rect.width,
&logical_monitor->rect.height);
add_tiled_monitor_outputs (manager, logical_monitor,
output->tile_info.group_id);
return logical_monitor;
}
/*
@ -191,9 +184,22 @@ make_logical_config (MetaMonitorManager *manager)
{
MetaOutput *output = &manager->outputs[i];
if (output->tile_info.group_id)
construct_tile_monitor (manager, logical_monitors,
output->tile_info.group_id);
if (!output->crtc)
continue;
if (!output->tile_info.group_id)
continue;
if (is_main_tiled_monitor_output (output))
{
MetaLogicalMonitor *logical_monitor;
logical_monitor = construct_tile_monitor (manager,
output,
logical_monitors->len);
g_array_append_val (logical_monitors, logical_monitor);
}
}
for (i = 0; i < manager->n_crtcs; i++)