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gtk/gdk/win32/gdkmonitor-win32.c
Chun-wei Fan ac64d2d910 GDK-Win32: Clean up HiDPI support and WGL a bit 
Make _gdk_win32_display_get_monitor_scale_factor() less complex, by:

*  Drop the preceding underscore.

*  Dropping an unused parameter.

*  Using a GdkSurface instead of a HWND, as the HWND that we pass into
   this function might have been taken from a GdkSurface, which are now
   always created with CS_OWNDC.  This means if a GdkSurface was passed
   in, we ensure that we only acquire the DC from the HWND once, and do
   not attempt to call ReleaseDC() on it.

*  Store the HDC that we acquire from the GdkSurface's HWND into the
   surface, and use that as the HDC we need for our GdkGLContext.

*  Drop the gl_hwnd from GdkWin32Display, as that is really should be
   stored in the GdkSurface.

*  For functions that were updated, name GdkWin32Display variables as
   display_win32 and GdkSurface variables as surface, to unify things.

*  Stop calling ReleaseDC() on the HDC that we use for OpenGL, since
   they were acquired from HWND's created with CS_OWNDC.
2021-07-19 18:30:42 +08:00

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/*
* Copyright © 2016 Red Hat, Inc
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#if defined (_WIN32_WINNT) && WIN32_WINNT < 0x0601
# undef _WIN32_WINNT
# define _WIN32_WINNT 0x0601
# ifdef WINVER
# undef WINVER
# endif
# define WINVER _WIN32_WINNT
#elif !defined (_WIN32_WINNT)
# define _WIN32_WINNT 0x0601
# ifdef WINVER
# undef WINVER
# endif
# define WINVER _WIN32_WINNT
#endif
#include "config.h"
#include "gdkprivate-win32.h"
#include "gdkdisplay-win32.h"
#include "gdkmonitor-win32.h"
#include <glib.h>
#include <gio/gio.h>
#include <cfgmgr32.h>
#include <devpropdef.h>
#include <setupapi.h>
#include "gdkprivate-win32.h"
G_DEFINE_TYPE (GdkWin32Monitor, gdk_win32_monitor, GDK_TYPE_MONITOR)
/* MinGW-w64 carelessly put DISPLAYCONFIG_OUTPUT_TECHNOLOGY_OTHER = -1 into this
* enum, as documented by MSDN. However, with
* DISPLAYCONFIG_OUTPUT_TECHNOLOGY_INTERNAL = 0x80000000 and
* DISPLAYCONFIG_OUTPUT_TECHNOLOGY_FORCE_UINT32 = 0xFFFFFFFF
* this had the effect of increasing enum size from 4 to 8 bytes,
* when compiled by GCC (MSVC doesn't have this problem), breaking ABI.
* At the moment of writing MinGW-w64 headers are still broken.
* When they are fixed, replace 9999 with actual version numbers.
* The fix below is not necessarily correct, but it works.
*/
#if SIZEOF_DISPLAYCONFIG_VIDEO_OUTPUT_TECHNOLOGY == 4
# define fixedDISPLAYCONFIG_PATH_INFO DISPLAYCONFIG_PATH_INFO
# define fixedDISPLAYCONFIG_TARGET_DEVICE_NAME DISPLAYCONFIG_TARGET_DEVICE_NAME
#else
typedef enum {
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_OTHER = (int) -1,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_HD15 = (int) 0,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_SVIDEO = (int) 1,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_COMPOSITE_VIDEO = (int) 2,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_COMPONENT_VIDEO = (int) 3,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_DVI = (int) 4,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_HDMI = (int) 5,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_LVDS = (int) 6,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_D_JPN = (int) 8,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_SDI = (int) 9,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_DISPLAYPORT_EXTERNAL = (int) 10,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_DISPLAYPORT_EMBEDDED = (int) 11,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_UDI_EXTERNAL = (int) 12,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_UDI_EMBEDDED = (int) 13,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_SDTVDONGLE = (int) 14,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_INTERNAL = (int) 0x80000000,
fixedDISPLAYCONFIG_OUTPUT_TECHNOLOGY_FORCE_UINT32 = (int) 0xFFFFFFFF
} fixedDISPLAYCONFIG_VIDEO_OUTPUT_TECHNOLOGY;
typedef struct fixedDISPLAYCONFIG_PATH_TARGET_INFO {
LUID adapterId;
UINT32 id;
UINT32 modeInfoIdx;
fixedDISPLAYCONFIG_VIDEO_OUTPUT_TECHNOLOGY outputTechnology;
DISPLAYCONFIG_ROTATION rotation;
DISPLAYCONFIG_SCALING scaling;
DISPLAYCONFIG_RATIONAL refreshRate;
DISPLAYCONFIG_SCANLINE_ORDERING scanLineOrdering;
BOOL targetAvailable;
UINT32 statusFlags;
} fixedDISPLAYCONFIG_PATH_TARGET_INFO;
typedef struct fixedDISPLAYCONFIG_PATH_INFO
{
DISPLAYCONFIG_PATH_SOURCE_INFO sourceInfo;
fixedDISPLAYCONFIG_PATH_TARGET_INFO targetInfo;
UINT32 flags;
} fixedDISPLAYCONFIG_PATH_INFO;
typedef struct fixedDISPLAYCONFIG_TARGET_DEVICE_NAME
{
DISPLAYCONFIG_DEVICE_INFO_HEADER header;
DISPLAYCONFIG_TARGET_DEVICE_NAME_FLAGS flags;
fixedDISPLAYCONFIG_VIDEO_OUTPUT_TECHNOLOGY outputTechnology;
UINT16 edidManufactureId;
UINT16 edidProductCodeId;
UINT32 connectorInstance;
WCHAR monitorFriendlyDeviceName[64];
WCHAR monitorDevicePath[128];
} fixedDISPLAYCONFIG_TARGET_DEVICE_NAME;
#endif
/* MinGW-w64 does not have these functions in its import libraries
* at the moment of writing.
* Also, Windows Vista doesn't have these functions at all
* (according to MSDN it does, but that is a lie), so we'd have
* to load them manually anyway (otherwise GTK apps won't even start
* on Vista).
*/
typedef LONG
(WINAPI *funcGetDisplayConfigBufferSizes) (UINT32 flags,
UINT32* numPathArrayElements,
UINT32* numModeInfoArrayElements);
typedef LONG
(WINAPI *funcQueryDisplayConfig) (UINT32 flags,
UINT32* numPathArrayElements,
fixedDISPLAYCONFIG_PATH_INFO* pathArray,
UINT32* numModeInfoArrayElements,
DISPLAYCONFIG_MODE_INFO* modeInfoArray,
DISPLAYCONFIG_TOPOLOGY_ID* currentTopologyId);
typedef LONG
(WINAPI *funcDisplayConfigGetDeviceInfo) (DISPLAYCONFIG_DEVICE_INFO_HEADER* requestPacket);
#ifndef MONITORINFOF_PRIMARY
#define MONITORINFOF_PRIMARY 1
#endif
#define G_GUID_FORMAT "%08lX-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X"
#define g_format_guid(guid) (guid)->Data1, \
(guid)->Data2, \
(guid)->Data3, \
(guid)->Data4[0], \
(guid)->Data4[1], \
(guid)->Data4[2], \
(guid)->Data4[3], \
(guid)->Data4[4], \
(guid)->Data4[5], \
(guid)->Data4[6], \
(guid)->Data4[7]
static gboolean
get_device_property (HDEVINFO device_infoset,
SP_DEVINFO_DATA *device_info_data,
DEVPROPKEY *property_key,
gpointer *r_buffer,
gsize *r_buffer_size,
DEVPROPTYPE *r_property_type,
GError **error)
{
DEVPROPTYPE property_type;
gpointer property;
DWORD property_size;
property = NULL;
property_size = 0;
if (!SetupDiGetDevicePropertyW (device_infoset,
device_info_data,
property_key,
&property_type,
property,
property_size,
&property_size,
0))
{
DWORD error_code = GetLastError ();
if (error_code != ERROR_INSUFFICIENT_BUFFER)
{
char *emsg = g_win32_error_message (error_code);
g_warning ("Failed to get device node property {" G_GUID_FORMAT "},%lu size: %s",
g_format_guid (&property_key->fmtid),
property_key->pid,
emsg);
g_free (emsg);
return FALSE;
}
}
if (r_buffer)
{
property = g_malloc (property_size);
if (!SetupDiGetDevicePropertyW (device_infoset,
device_info_data,
property_key,
&property_type,
property,
property_size,
&property_size,
0))
{
DWORD error_code = GetLastError ();
char *emsg = g_win32_error_message (error_code);
g_warning ("Failed to get device node property {" G_GUID_FORMAT "},%lu: %s",
g_format_guid (&property_key->fmtid),
property_key->pid,
emsg);
g_free (emsg);
return FALSE;
}
*r_buffer = property;
}
if (r_buffer_size)
*r_buffer_size = property_size;
if (r_property_type)
*r_property_type = property_type;
return TRUE;
}
static GPtrArray *
get_monitor_devices (GdkWin32Display *win32_display)
{
GPtrArray *monitor_array;
HDEVINFO device_infoset;
SP_DEVINFO_DATA device_info_data;
DWORD device_index;
GUID device_interface_monitor = {0xe6f07b5f, 0xee97, 0x4a90, {0xb0, 0x76, 0x33, 0xf5, 0x7b, 0xf4, 0xea, 0xa7}};
DEVPROPKEY pkey_device_instance_id = {{0x78C34FC8, 0x104A, 0x4ACA, {0x9E, 0xA4, 0x52, 0x4D, 0x52, 0x99, 0x6E, 0x57}}, 256};
DEVPROPKEY pkey_manufacturer = {{0xA45C254E, 0xDF1C, 0x4EFD, {0x80, 0x20, 0x67, 0xD1, 0x46, 0xA8, 0x50, 0xE0}}, 13};
DEVPROPKEY pkey_display_name = {{0xB725F130, 0x47EF, 0x101A, {0xA5, 0xF1, 0x02, 0x60, 0x8C, 0x9E, 0xEB, 0xAC}}, 10};
monitor_array = g_ptr_array_new_with_free_func (g_object_unref);
device_infoset = SetupDiGetClassDevs (&device_interface_monitor, 0, 0, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT);
if (device_infoset == INVALID_HANDLE_VALUE)
return monitor_array;
for (device_index = 0; TRUE; device_index++)
{
gunichar2 *p;
char *instance_path;
gunichar2 *prop;
DWORD proptype;
HKEY device_registry_key;
GdkWin32Monitor *w32mon;
GdkMonitor *mon;
unsigned char *edid;
DWORD edid_size;
DWORD edid_type;
memset (&device_info_data, 0, sizeof (device_info_data));
device_info_data.cbSize = sizeof (device_info_data);
if (!SetupDiEnumDeviceInfo (device_infoset, device_index, &device_info_data))
{
DWORD error_code = GetLastError ();
if (error_code == ERROR_NO_MORE_ITEMS)
break;
g_warning ("SetupDiEnumDeviceInfo() failed: %lu\n", error_code);
break;
}
if (!get_device_property (device_infoset,
&device_info_data,
&pkey_device_instance_id,
(gpointer *) &prop,
NULL,
&proptype,
NULL))
continue;
if (proptype != DEVPROP_TYPE_STRING)
{
g_free (prop);
continue;
}
w32mon = g_object_new (GDK_TYPE_WIN32_MONITOR, "display", win32_display, NULL);
mon = GDK_MONITOR (w32mon);
g_ptr_array_add (monitor_array, w32mon);
/* Half-initialized monitors are candidates for removal */
w32mon->remove = TRUE;
/* device instance ID looks like: DISPLAY\FOO\X&XXXXXXX&X&UIDXXX */
for (p = prop; p[0]; p++)
if (p[0] == L'\\')
p[0] = L'#';
/* now device instance ID looks like: DISPLAY#FOO#X&XXXXXXX&X&UIDXXX */
/* instance path looks like: \\?\DISPLAY#FOO#X&XXXXXXX&X&UIDXXX#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7} */
instance_path = g_strdup_printf ("\\\\?\\%ls#{" G_GUID_FORMAT "}",
prop,
g_format_guid (&device_interface_monitor));
w32mon->instance_path = g_utf8_strdown (instance_path, -1);
g_free (instance_path);
g_free (prop);
if (get_device_property (device_infoset,
&device_info_data,
&pkey_manufacturer,
(gpointer *) &prop,
NULL, &proptype, NULL))
{
if (proptype == DEVPROP_TYPE_STRING)
{
char *manufacturer = g_utf16_to_utf8 (prop, -1, NULL, NULL, NULL);
gdk_monitor_set_manufacturer (mon, manufacturer);
g_free (manufacturer);
}
g_free (prop);
}
if (get_device_property (device_infoset,
&device_info_data,
&pkey_display_name,
(gpointer *) &prop,
NULL, &proptype, NULL))
{
if (proptype == DEVPROP_TYPE_STRING)
{
char *name = g_utf16_to_utf8 (prop, -1, NULL, NULL, NULL);
gdk_monitor_set_model (mon, name);
g_free (name);
}
g_free (prop);
}
device_registry_key = SetupDiOpenDevRegKey (device_infoset, &device_info_data, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_READ);
if (device_registry_key == NULL || device_registry_key == INVALID_HANDLE_VALUE)
continue;
edid = NULL;
edid_size = 0;
if (RegQueryValueExW (device_registry_key, L"EDID",
NULL, &edid_type,
edid, &edid_size) == ERROR_SUCCESS)
{
edid = g_malloc (edid_size);
if (RegQueryValueExW (device_registry_key, L"EDID",
NULL, &edid_type,
edid, &edid_size) == ERROR_SUCCESS)
{
gdk_monitor_set_physical_size (mon,
((edid[68] & 0x00F0) << 4) + edid[66],
((edid[68] & 0x000F) << 8) + edid[67]);
}
g_free (edid);
}
RegCloseKey (device_registry_key);
}
SetupDiDestroyDeviceInfoList (device_infoset);
return monitor_array;
}
static void
populate_monitor_devices_from_display_config (GPtrArray *monitors)
{
HMODULE user32;
LONG return_code;
funcGetDisplayConfigBufferSizes getDisplayConfigBufferSizes;
funcQueryDisplayConfig queryDisplayConfig;
funcDisplayConfigGetDeviceInfo displayConfigGetDeviceInfo;
UINT32 dispconf_mode_count;
UINT32 dispconf_path_count;
fixedDISPLAYCONFIG_PATH_INFO *dispconf_paths;
DISPLAYCONFIG_MODE_INFO *dispconf_modes;
int path_index;
user32 = LoadLibraryA ("user32.dll");
if (user32 == NULL)
return;
getDisplayConfigBufferSizes = (funcGetDisplayConfigBufferSizes) GetProcAddress (user32,
"GetDisplayConfigBufferSizes");
queryDisplayConfig = (funcQueryDisplayConfig) GetProcAddress (user32,
"QueryDisplayConfig");
displayConfigGetDeviceInfo = (funcDisplayConfigGetDeviceInfo) GetProcAddress (user32,
"DisplayConfigGetDeviceInfo");
if (getDisplayConfigBufferSizes == NULL ||
queryDisplayConfig == NULL ||
displayConfigGetDeviceInfo == NULL)
{
/* This does happen on Windows Vista, so don't warn about this */
FreeLibrary (user32);
return;
}
return_code = getDisplayConfigBufferSizes (QDC_ONLY_ACTIVE_PATHS,
&dispconf_path_count,
&dispconf_mode_count);
if (return_code != ERROR_SUCCESS)
{
g_warning ("Can't get displayconfig buffer size: 0x%lx\n", return_code);
FreeLibrary (user32);
return;
}
dispconf_paths = g_new (fixedDISPLAYCONFIG_PATH_INFO, dispconf_path_count);
dispconf_modes = g_new (DISPLAYCONFIG_MODE_INFO, dispconf_mode_count);
return_code = queryDisplayConfig (QDC_ONLY_ACTIVE_PATHS,
&dispconf_path_count,
dispconf_paths,
&dispconf_mode_count,
dispconf_modes,
NULL);
if (return_code != ERROR_SUCCESS)
{
g_free (dispconf_paths);
g_free (dispconf_modes);
FreeLibrary (user32);
return;
}
for (path_index = 0; path_index < dispconf_path_count; path_index++)
{
fixedDISPLAYCONFIG_TARGET_DEVICE_NAME tdn;
int i;
GdkWin32Monitor *w32mon;
GdkMonitor *mon;
char *path, *path_lower;
DISPLAYCONFIG_RATIONAL *refresh;
if ((dispconf_paths[path_index].flags & DISPLAYCONFIG_PATH_ACTIVE) == 0)
continue;
tdn.header.type = DISPLAYCONFIG_DEVICE_INFO_GET_TARGET_NAME;
tdn.header.size = sizeof (tdn);
tdn.header.adapterId = dispconf_paths[path_index].targetInfo.adapterId;
tdn.header.id = dispconf_paths[path_index].targetInfo.id;
return_code = displayConfigGetDeviceInfo (&tdn.header);
if (return_code != ERROR_SUCCESS)
continue;
path = g_utf16_to_utf8 (tdn.monitorDevicePath, -1, NULL, NULL, NULL);
if (path == NULL)
continue;
path_lower = g_utf8_strdown (path, -1);
g_free (path);
for (i = 0, w32mon = NULL; i < monitors->len; i++)
{
GdkWin32Monitor *m = g_ptr_array_index (monitors, i);
if (g_strcmp0 (m->instance_path, path_lower) != 0)
continue;
w32mon = m;
break;
}
g_free (path_lower);
if (w32mon == NULL)
continue;
mon = GDK_MONITOR (w32mon);
if (!tdn.flags.friendlyNameForced)
{
/* monitorFriendlyDeviceName is usually nicer */
char *name = g_utf16_to_utf8 (tdn.monitorFriendlyDeviceName, -1, NULL, NULL, NULL);
gdk_monitor_set_model (mon, name);
g_free (name);
}
refresh = &dispconf_paths[path_index].targetInfo.refreshRate;
gdk_monitor_set_refresh_rate (mon,
refresh->Numerator * (UINT64) 1000 / refresh->Denominator);
}
g_free (dispconf_paths);
g_free (dispconf_modes);
FreeLibrary (user32);
}
typedef struct {
GPtrArray *monitors;
gboolean have_monitor_devices;
GdkWin32Display *display;
} EnumMonitorData;
static BOOL CALLBACK
enum_monitor (HMONITOR hmonitor,
HDC hdc,
LPRECT rect,
LPARAM param)
{
EnumMonitorData *data = (EnumMonitorData *) param;
MONITORINFOEXW monitor_info;
DWORD i_adapter;
/* Grab monitor_info for this logical monitor */
monitor_info.cbSize = sizeof (MONITORINFOEXW);
GetMonitorInfoW (hmonitor, (MONITORINFO *) &monitor_info);
/* Sidestep to enumerate display adapters */
for (i_adapter = 0; TRUE; i_adapter++)
{
DISPLAY_DEVICEW dd;
DEVMODEW dm;
DWORD i_monitor;
DWORD frequency;
memset (&dd, 0, sizeof (dd));
dd.cb = sizeof (dd);
/* Get i_adapter'th adapter */
if (!EnumDisplayDevicesW (NULL, i_adapter, &dd, EDD_GET_DEVICE_INTERFACE_NAME))
break;
if ((dd.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP) == 0)
continue;
/* Match this display adapter to one for which we've got monitor_info
* (logical monitor == adapter)
*/
if (wcscmp (dd.DeviceName, monitor_info.szDevice) != 0)
continue;
dm.dmSize = sizeof (dm);
/* Grab refresh rate for this adapter while we're at it */
if (EnumDisplaySettingsW (dd.DeviceName, ENUM_CURRENT_SETTINGS, &dm))
frequency = dm.dmDisplayFrequency;
else
frequency = 0;
/* Enumerate monitors connected to this display adapter */
for (i_monitor = 0; TRUE; i_monitor++)
{
DISPLAY_DEVICEW dd_monitor;
char *device_id_lower, *tmp;
DWORD i;
GdkWin32Monitor *w32mon;
GdkMonitor *mon;
GdkRectangle rect;
guint scale;
memset (&dd_monitor, 0, sizeof (dd_monitor));
dd_monitor.cb = sizeof (dd_monitor);
if (data->have_monitor_devices)
{
/* Get i_monitor'th monitor */
if (!EnumDisplayDevicesW (dd.DeviceName, i_monitor, &dd_monitor, EDD_GET_DEVICE_INTERFACE_NAME))
break;
tmp = g_utf16_to_utf8 (dd_monitor.DeviceID, -1, NULL, NULL, NULL);
if (tmp == NULL)
continue;
device_id_lower = g_utf8_strdown (tmp, -1);
g_free (tmp);
/* Match this monitor to one of the monitor devices we found earlier */
for (i = 0, w32mon = NULL; i < data->monitors->len; i++)
{
GdkWin32Monitor *m = g_ptr_array_index (data->monitors, i);
if (g_strcmp0 (device_id_lower, m->instance_path) != 0)
continue;
w32mon = m;
break;
}
g_free (device_id_lower);
if (w32mon == NULL)
continue;
}
else
{
/* Headless PC or a virtual machine, it has no monitor devices.
* Make one up.
*/
w32mon = g_object_new (GDK_TYPE_WIN32_MONITOR, "display", data->display, NULL);
g_ptr_array_add (data->monitors, w32mon);
i = data->monitors->len - 1;
w32mon->madeup = TRUE;
}
mon = GDK_MONITOR (w32mon);
if (gdk_monitor_get_model (mon) == NULL)
{
char *name = NULL;
/* Only use dd.DeviceName as a last resort, as it is just
* \\.\DISPLAYX\MonitorY (for some values of X and Y).
*/
if (dd_monitor.DeviceName[0] != L'\0')
name = g_utf16_to_utf8 (dd_monitor.DeviceName, -1, NULL, NULL, NULL);
else if (dd.DeviceName[0] != L'\0')
name = g_utf16_to_utf8 (dd.DeviceName, -1, NULL, NULL, NULL);
if (name != NULL)
gdk_monitor_set_model (mon, name);
g_free (name);
}
/* GetDeviceCaps seems to provide a wild guess, prefer more precise EDID info */
if (gdk_monitor_get_width_mm (mon) == 0 &&
gdk_monitor_get_height_mm (mon) == 0)
{
HDC hDC = CreateDCW (L"DISPLAY", monitor_info.szDevice, NULL, NULL);
gdk_monitor_set_physical_size (mon,
GetDeviceCaps (hDC, HORZSIZE),
GetDeviceCaps (hDC, VERTSIZE));
DeleteDC (hDC);
}
/* frequency is in Hz and is unsigned long,
* prefer more precise refresh_rate found earlier,
* which comes as a Numerator & Denominator pair and is more precise.
*/
if (gdk_monitor_get_refresh_rate (mon) == 0)
gdk_monitor_set_refresh_rate (mon, frequency * 1000);
/* This is the reason this function exists. This data is not available
* via other functions.
*/
rect.x = monitor_info.rcWork.left;
rect.y = monitor_info.rcWork.top;
rect.width = (monitor_info.rcWork.right - monitor_info.rcWork.left);
rect.height = (monitor_info.rcWork.bottom - monitor_info.rcWork.top);
/* This is temporary, scale will be applied below */
w32mon->work_rect = rect;
if (data->display->has_fixed_scale)
scale = data->display->surface_scale;
else
{
/* First acquire the scale using the current screen */
scale = gdk_win32_display_get_monitor_scale_factor (data->display, NULL, NULL);
/* acquire the scale using the monitor which the window is nearest on Windows 8.1+ */
if (data->display->have_at_least_win81)
{
HMONITOR hmonitor;
POINT pt;
/* Not subtracting _gdk_offset_x and _gdk_offset_y because they will only
* be added later on, in _gdk_win32_display_get_monitor_list().
*/
pt.x = w32mon->work_rect.x + w32mon->work_rect.width / 2;
pt.y = w32mon->work_rect.y + w32mon->work_rect.height / 2;
hmonitor = MonitorFromPoint (pt, MONITOR_DEFAULTTONEAREST);
scale = gdk_win32_display_get_monitor_scale_factor (data->display, NULL, hmonitor);
}
}
gdk_monitor_set_scale_factor (mon, scale);
/* Now apply the scale to the work rectangle */
w32mon->work_rect.x /= scale;
w32mon->work_rect.y /= scale;
w32mon->work_rect.width /= scale;
w32mon->work_rect.height /= scale;
rect.x = monitor_info.rcMonitor.left / scale;
rect.y = monitor_info.rcMonitor.top / scale;
rect.width = (monitor_info.rcMonitor.right - monitor_info.rcMonitor.left) / scale;
rect.height = (monitor_info.rcMonitor.bottom - monitor_info.rcMonitor.top) / scale;
gdk_monitor_set_geometry (mon, &rect);
if (monitor_info.dwFlags & MONITORINFOF_PRIMARY && i != 0)
{
/* Put primary monitor at index 0, just in case somebody needs
* to know which one is the primary.
*/
GdkWin32Monitor *temp = g_ptr_array_index (data->monitors, 0);
g_ptr_array_index (data->monitors, 0) = w32mon;
g_ptr_array_index (data->monitors, i) = temp;
}
/* Work area is the most important component, actively used by GTK,
* but our initial list of monitor devices did not have it.
* Any monitor devices not matched in this functions will have
* 0-filled work area and will therefore be useless, so let them
* keep remove == TRUE and be removed further up the stack.
*/
w32mon->remove = FALSE;
/* One virtual monitor per display adapter */
if (w32mon->madeup)
break;
}
}
return TRUE;
}
static void
prune_monitors (EnumMonitorData *data)
{
int i;
for (i = 0; i < data->monitors->len; i++)
{
GdkWin32Monitor *m;
m = g_ptr_array_index (data->monitors, i);
if (m->remove)
g_ptr_array_remove_index (data->monitors, i--);
}
}
GPtrArray *
_gdk_win32_display_get_monitor_list (GdkWin32Display *win32_display)
{
EnumMonitorData data;
int i;
data.display = win32_display;
data.monitors = get_monitor_devices (win32_display);
if (data.monitors->len != 0)
{
populate_monitor_devices_from_display_config (data.monitors);
data.have_monitor_devices = TRUE;
}
else
{
data.have_monitor_devices = FALSE;
}
EnumDisplayMonitors (NULL, NULL, enum_monitor, (LPARAM) &data);
prune_monitors (&data);
if (data.monitors->len == 0 && data.have_monitor_devices)
{
/* We thought we had monitors, but enumeration eventually failed, and
* we have none. Try again, this time making stuff up as we go.
*/
data.have_monitor_devices = FALSE;
EnumDisplayMonitors (NULL, NULL, enum_monitor, (LPARAM) &data);
prune_monitors (&data);
}
_gdk_offset_x = G_MININT;
_gdk_offset_y = G_MININT;
for (i = 0; i < data.monitors->len; i++)
{
GdkWin32Monitor *m;
GdkRectangle rect;
m = g_ptr_array_index (data.monitors, i);
/* Calculate offset */
gdk_monitor_get_geometry (GDK_MONITOR (m), &rect);
_gdk_offset_x = MAX (_gdk_offset_x, -rect.x);
_gdk_offset_y = MAX (_gdk_offset_y, -rect.y);
}
GDK_NOTE (MISC, g_print ("Multi-monitor offset: (%d,%d)\n",
_gdk_offset_x, _gdk_offset_y));
/* Translate monitor coords into GDK coordinate space */
for (i = 0; i < data.monitors->len; i++)
{
GdkWin32Monitor *m;
GdkRectangle rect;
m = g_ptr_array_index (data.monitors, i);
gdk_monitor_get_geometry (GDK_MONITOR (m), &rect);
rect.x += _gdk_offset_x;
rect.y += _gdk_offset_y;
gdk_monitor_set_geometry (GDK_MONITOR (m), &rect);
m->work_rect.x += _gdk_offset_x;
m->work_rect.y += _gdk_offset_y;
GDK_NOTE (MISC, g_print ("Monitor %d: %dx%d@%+d%+d\n", i,
rect.width, rect.height, rect.x, rect.y));
}
return data.monitors;
}
static void
gdk_win32_monitor_finalize (GObject *object)
{
GdkWin32Monitor *win32_monitor = GDK_WIN32_MONITOR (object);
g_free (win32_monitor->instance_path);
G_OBJECT_CLASS (gdk_win32_monitor_parent_class)->finalize (object);
}
int
_gdk_win32_monitor_compare (GdkWin32Monitor *a,
GdkWin32Monitor *b)
{
if (a->instance_path != NULL &&
b->instance_path != NULL)
return g_strcmp0 (a->instance_path, b->instance_path);
return a == b ? 0 : a < b ? -1 : 1;
}
/**
* gdk_win32_monitor_get_workarea:
* @monitor: a `GdkMonitor`
* @workarea: (out): a `GdkRectangle` to be filled with the monitor workarea
*
* Retrieves the size and position of the “work area” on a monitor
* within the display coordinate space.
*
* The returned geometry is in ”application pixels”, not in ”device pixels”
* (see [method@Gdk.Monitor.get_scale_factor]).
*/
void
gdk_win32_monitor_get_workarea (GdkMonitor *monitor,
GdkRectangle *dest)
{
GdkWin32Monitor *win32_monitor = GDK_WIN32_MONITOR (monitor);
*dest = win32_monitor->work_rect;
}
static void
gdk_win32_monitor_init (GdkWin32Monitor *monitor)
{
}
static void
gdk_win32_monitor_class_init (GdkWin32MonitorClass *class)
{
G_OBJECT_CLASS (class)->finalize = gdk_win32_monitor_finalize;
}
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