forked from AuroraMiddleware/gtk
6abd65c83b
This enables HiDPI support for GTK+ on Windows, so that the fonts and window look better on HiDPI displays. Notes for the current work: -The DPI awareness enabling can be disabled if and only if an application manifest is not embedded in the app to enable DPI awareness AND a user compatibility setting is not set to limit DPI awareness for the app, via the envvar GDK_WIN32_DISABLE_HIDPI. The app manifest/user setting for DPI awareness will always win against the envvar, and so the HiDPI items will be always setup in such scenarios, unless DPI awareness is disabled. -Both automatic detection for the scaling factor and setting the scale factor using the GDK_SCALE envvar are supported, where the envvar takes precedence, which will therefore disable automatic scaling when resolution changes. -We now default to a per-system DPI awareness model, which means that we do not handle WM_DPICHANGED, unless one sets the GDK_WIN32_PER_MONITOR_HIDPI envvar, where notes for it are in the following point. -Automatic scaling during WM_DISPLAYCHANGE is handled (DPI setting change of current monitor) is now supported. WM_DPICHANGED is handled as well, except that the window positioning during the change of scaling still needs to be refined, a change in GDK itself may be required for this. -I am unable to test the wintab items because I don't have such devices around. https://bugzilla.gnome.org/show_bug.cgi?id=768081
299 lines
8.8 KiB
C
299 lines
8.8 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2009 Carlos Garnacho <carlosg@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gdk/gdkwindow.h>
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#include <windowsx.h>
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#include <objbase.h>
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#include "gdkwin32.h"
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#include "gdkdevice-wintab.h"
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G_DEFINE_TYPE (GdkDeviceWintab, gdk_device_wintab, GDK_TYPE_DEVICE)
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static gboolean
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gdk_device_wintab_get_history (GdkDevice *device,
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GdkWindow *window,
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guint32 start,
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guint32 stop,
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GdkTimeCoord ***events,
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gint *n_events)
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{
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return FALSE;
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}
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static GdkModifierType
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get_current_mask (void)
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{
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GdkModifierType mask;
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BYTE kbd[256];
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GetKeyboardState (kbd);
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mask = 0;
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if (kbd[VK_SHIFT] & 0x80)
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mask |= GDK_SHIFT_MASK;
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if (kbd[VK_CAPITAL] & 0x80)
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mask |= GDK_LOCK_MASK;
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if (kbd[VK_CONTROL] & 0x80)
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mask |= GDK_CONTROL_MASK;
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if (kbd[VK_MENU] & 0x80)
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mask |= GDK_MOD1_MASK;
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if (kbd[VK_LBUTTON] & 0x80)
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mask |= GDK_BUTTON1_MASK;
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if (kbd[VK_MBUTTON] & 0x80)
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mask |= GDK_BUTTON2_MASK;
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if (kbd[VK_RBUTTON] & 0x80)
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mask |= GDK_BUTTON3_MASK;
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return mask;
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}
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static void
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gdk_device_wintab_get_state (GdkDevice *device,
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GdkWindow *window,
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gdouble *axes,
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GdkModifierType *mask)
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{
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GdkDeviceWintab *device_wintab;
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device_wintab = GDK_DEVICE_WINTAB (device);
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/* For now just use the last known button and axis state of the device.
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* Since graphical tablets send an insane amount of motion events each
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* second, the info should be fairly up to date */
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if (mask)
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{
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*mask = get_current_mask ();
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*mask &= 0xFF; /* Mask away core pointer buttons */
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*mask |= ((device_wintab->button_state << 8)
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& (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK
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| GDK_BUTTON3_MASK | GDK_BUTTON4_MASK
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| GDK_BUTTON5_MASK));
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}
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if (axes && device_wintab->last_axis_data)
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_gdk_device_wintab_translate_axes (device_wintab, window, axes, NULL, NULL);
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}
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static void
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gdk_device_wintab_set_window_cursor (GdkDevice *device,
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GdkWindow *window,
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GdkCursor *cursor)
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{
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}
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static void
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gdk_device_wintab_warp (GdkDevice *device,
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GdkScreen *screen,
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gdouble x,
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gdouble y)
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{
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}
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static void
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gdk_device_wintab_query_state (GdkDevice *device,
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GdkWindow *window,
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GdkWindow **root_window,
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GdkWindow **child_window,
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gdouble *root_x,
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gdouble *root_y,
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gdouble *win_x,
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gdouble *win_y,
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GdkModifierType *mask)
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{
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GdkDeviceWintab *device_wintab;
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GdkScreen *screen;
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POINT point;
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HWND hwnd, hwndc;
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GdkWindowImplWin32 *impl;
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device_wintab = GDK_DEVICE_WINTAB (device);
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screen = gdk_window_get_screen (window);
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impl = GDK_WINDOW_IMPL_WIN32 (window->impl);
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hwnd = GDK_WINDOW_HWND (window);
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GetCursorPos (&point);
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if (root_x)
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*root_x = point.x / impl->window_scale;
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if (root_y)
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*root_y = point.y / impl->window_scale;
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ScreenToClient (hwnd, &point);
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if (win_x)
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*win_x = point.x / impl->window_scale;
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if (win_y)
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*win_y = point.y / impl->window_scale;
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if (window == gdk_get_default_root_window ())
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{
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if (win_x)
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*win_x += _gdk_offset_x;
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if (win_y)
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*win_y += _gdk_offset_y;
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}
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if (child_window)
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{
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hwndc = ChildWindowFromPoint (hwnd, point);
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if (hwndc && hwndc != hwnd)
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*child_window = gdk_win32_handle_table_lookup (hwndc);
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else
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*child_window = NULL; /* Direct child unknown to gdk */
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}
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if (root_window)
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*root_window = gdk_screen_get_root_window (screen);
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if (mask)
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{
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*mask = get_current_mask ();
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*mask &= 0xFF; /* Mask away core pointer buttons */
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*mask |= ((device_wintab->button_state << 8)
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& (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK
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| GDK_BUTTON3_MASK | GDK_BUTTON4_MASK
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| GDK_BUTTON5_MASK));
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}
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}
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static GdkGrabStatus
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gdk_device_wintab_grab (GdkDevice *device,
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GdkWindow *window,
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gboolean owner_events,
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GdkEventMask event_mask,
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GdkWindow *confine_to,
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GdkCursor *cursor,
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guint32 time_)
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{
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return GDK_GRAB_SUCCESS;
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}
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static void
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gdk_device_wintab_ungrab (GdkDevice *device,
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guint32 time_)
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{
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}
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static GdkWindow *
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gdk_device_wintab_window_at_position (GdkDevice *device,
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gdouble *win_x,
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gdouble *win_y,
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GdkModifierType *mask,
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gboolean get_toplevel)
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{
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return NULL;
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}
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static void
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gdk_device_wintab_select_window_events (GdkDevice *device,
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GdkWindow *window,
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GdkEventMask event_mask)
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{
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}
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void
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_gdk_device_wintab_translate_axes (GdkDeviceWintab *device_wintab,
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GdkWindow *window,
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gdouble *axes,
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gdouble *x,
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gdouble *y)
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{
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GdkDevice *device;
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GdkWindow *impl_window, *root_window;
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gint root_x, root_y;
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gdouble temp_x, temp_y;
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gint i;
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device = GDK_DEVICE (device_wintab);
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root_window = gdk_screen_get_root_window (gdk_window_get_screen (window));
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impl_window = _gdk_window_get_impl_window (window);
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temp_x = temp_y = 0;
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gdk_window_get_origin (impl_window, &root_x, &root_y);
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for (i = 0; i < gdk_device_get_n_axes (device); i++)
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{
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GdkAxisUse use;
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use = gdk_device_get_axis_use (device, i);
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switch (use)
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{
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case GDK_AXIS_X:
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case GDK_AXIS_Y:
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if (gdk_device_get_mode (device) == GDK_MODE_WINDOW)
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_gdk_device_translate_window_coord (device, window, i,
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device_wintab->last_axis_data[i],
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&axes[i]);
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else
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_gdk_device_translate_screen_coord (device, window,
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root_x, root_y,
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gdk_window_get_width (root_window),
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gdk_window_get_height (root_window),
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i,
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device_wintab->last_axis_data[i],
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&axes[i]);
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if (use == GDK_AXIS_X)
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temp_x = axes[i];
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else if (use == GDK_AXIS_Y)
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temp_y = axes[i];
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break;
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default:
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_gdk_device_translate_axis (device, i,
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device_wintab->last_axis_data[i],
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&axes[i]);
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break;
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}
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}
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if (x)
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*x = temp_x;
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if (y)
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*y = temp_y;
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}
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static void
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gdk_device_wintab_class_init (GdkDeviceWintabClass *klass)
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{
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GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
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device_class->get_history = gdk_device_wintab_get_history;
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device_class->get_state = gdk_device_wintab_get_state;
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device_class->set_window_cursor = gdk_device_wintab_set_window_cursor;
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device_class->warp = gdk_device_wintab_warp;
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device_class->query_state = gdk_device_wintab_query_state;
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device_class->grab = gdk_device_wintab_grab;
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device_class->ungrab = gdk_device_wintab_ungrab;
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device_class->window_at_position = gdk_device_wintab_window_at_position;
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device_class->select_window_events = gdk_device_wintab_select_window_events;
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}
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static void
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gdk_device_wintab_init (GdkDeviceWintab *device_wintab)
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{
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}
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