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Be a bit more forgiving about invalid monitor number

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By moving the g_return_if_fail() checks into individual monitor functions.
See bug 561130.
This commit is contained in:
Matthias Clasen 2009-11-27 18:39:15 -05:00
parent 5bfab2b9d4
commit 43a07af9b1
1 changed files with 56 additions and 46 deletions
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102
gdk/x11/gdkscreen-x11.c
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@ -205,7 +205,7 @@ gdk_screen_get_height_mm (GdkScreen *screen)
gint
gdk_screen_get_number (GdkScreen *screen)
{
g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
return GDK_SCREEN_X11 (screen)->screen_num;
}
@ -338,42 +338,26 @@ gdk_screen_x11_finalize (GObject *object)
/**
* gdk_screen_get_n_monitors:
* @screen: a #GdkScreen.
* @screen: a #GdkScreen
*
* Returns the number of monitors which @screen consists of.
*
* Returns: number of monitors which @screen consists of.
* Returns: number of monitors which @screen consists of
*
* Since: 2.2
**/
gint
*/
gint
gdk_screen_get_n_monitors (GdkScreen *screen)
{
g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
return GDK_SCREEN_X11 (screen)->n_monitors;
}
static GdkX11Monitor *
get_monitor (GdkScreen *screen,
int monitor_num)
{
GdkScreenX11 *screen_x11;
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
screen_x11 = GDK_SCREEN_X11 (screen);
g_return_val_if_fail (monitor_num < screen_x11->n_monitors, NULL);
g_return_val_if_fail (monitor_num >= 0, NULL);
return &(screen_x11->monitors[monitor_num]);
}
/**
* gdk_screen_get_monitor_width_mm:
* @screen: a #GdkScreen
* @monitor_num: number of the monitor
* @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
*
* Gets the width in millimeters of the specified monitor, if available.
*
@ -385,15 +369,21 @@ gint
gdk_screen_get_monitor_width_mm (GdkScreen *screen,
gint monitor_num)
{
return get_monitor (screen, monitor_num)->width_mm;
GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
g_return_val_if_fail (GDK_IS_SCREEN (screen), -1);
g_return_val_if_fail (monitor_num >= 0, -1);
g_return_val_if_fail (monitor_num < screen_x11->n_monitors, -1);
return screen_x11->monitors[monitor_num].width_mm;
}
/**
* gdk_screen_get_monitor_height_mm:
* @screen: a #GdkScreen
* @monitor_num: number of the monitor
* @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
*
* Gets the height in millimeters of the specified monitor.
* Gets the height in millimeters of the specified monitor.
*
* Returns: the height of the monitor, or -1 if not available
*
@ -403,18 +393,24 @@ gint
gdk_screen_get_monitor_height_mm (GdkScreen *screen,
gint monitor_num)
{
return get_monitor (screen, monitor_num)->height_mm;
GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
g_return_val_if_fail (GDK_IS_SCREEN (screen), -1);
g_return_val_if_fail (monitor_num >= 0, -1);
g_return_val_if_fail (monitor_num < screen_x11->n_monitors, -1);
return screen_x11->monitors[monitor_num].height_mm;
}
/**
* gdk_screen_get_monitor_plug_name:
* @screen: a #GdkScreen
* @monitor_num: number of the monitor
* @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
*
* Returns the output name of the specified monitor.
* Returns the output name of the specified monitor.
* Usually something like VGA, DVI, or TV, not the actual
* product name of the display device.
*
*
* Returns: a newly-allocated string containing the name of the monitor,
* or %NULL if the name cannot be determined
*
@ -424,16 +420,22 @@ gchar *
gdk_screen_get_monitor_plug_name (GdkScreen *screen,
gint monitor_num)
{
return g_strdup (get_monitor (screen, monitor_num)->output_name);
GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
g_return_val_if_fail (monitor_num >= 0, NULL);
g_return_val_if_fail (monitor_num < screen_x11->n_monitors, NULL);
return g_strdup (screen_x11->monitors[monitor_num].output_name);
}
/**
* gdk_x11_screen_get_monitor_output:
* @screen: a #GdkScreen
* @monitor_num: number of the monitor
* @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
*
* Gets the XID of the specified output/monitor.
* If the X server does not support version 1.2 of the RANDR
* If the X server does not support version 1.2 of the RANDR
* extension, 0 is returned.
*
* Returns: the XID of the monitor
@ -444,34 +446,42 @@ XID
gdk_x11_screen_get_monitor_output (GdkScreen *screen,
gint monitor_num)
{
return get_monitor (screen, monitor_num)->output;
GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
g_return_val_if_fail (GDK_IS_SCREEN (screen), None);
g_return_val_if_fail (monitor_num >= 0, None);
g_return_val_if_fail (monitor_num < screen_x11->n_monitors, None);
return screen_x11->monitors[monitor_num].output;
}
/**
* gdk_screen_get_monitor_geometry:
* @screen : a #GdkScreen.
* @monitor_num: the monitor number.
* @screen : a #GdkScreen
* @monitor_num: the monitor number, between 0 and gdk_screen_get_n_monitors (screen)
* @dest : a #GdkRectangle to be filled with the monitor geometry
*
* Retrieves the #GdkRectangle representing the size and position of
* Retrieves the #GdkRectangle representing the size and position of
* the individual monitor within the entire screen area.
*
* Note that the size of the entire screen area can be retrieved via
*
* Note that the size of the entire screen area can be retrieved via
* gdk_screen_get_width() and gdk_screen_get_height().
*
* Since: 2.2
**/
void
*/
void
gdk_screen_get_monitor_geometry (GdkScreen *screen,
gint monitor_num,
GdkRectangle *dest)
{
if (dest)
{
GdkX11Monitor *monitor = get_monitor (screen, monitor_num);
GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
*dest = monitor->geometry;
}
g_return_if_fail (GDK_IS_SCREEN (screen));
g_return_if_fail (monitor_num >= 0);
g_return_if_fail (monitor_num < screen_x11->n_monitors);
if (dest)
*dest = screen_x11->monitors[monitor_num].geometry;
}
/**