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authorJon TURNEY <jon.turney@dronecode.org.uk>2010-03-23 04:45:37 -0500
committerJon TURNEY <jon.turney@dronecode.org.uk>2011-10-05 15:12:07 +0100
commit59f1b7c2ab2a620171cfc111019dbdd7f2b97d4d (patch)
treebf2aa0cf519c9e6fcbb370257115571ec172d374
parent835b277169c45fd2466146193f51a1dd29935d69 (diff)
Cygwin/X: Make default DPI match native DPI
Make the default DPI match the current Windows DPI setting. If that setting can't be retrieved, change the fallback DPI value from 75 dpi to 96 dpi. Mark the application as dpiAware in the manifest, which prevents dpi virtualization for high (>96) dpi values on Vista and later. Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk> Signed-off-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
-rwxr-xr-xhw/xwin/XWin.exe.manifest5
-rw-r--r--hw/xwin/win.h2
-rw-r--r--hw/xwin/winprocarg.c23
3 files changed, 25 insertions, 5 deletions
diff --git a/hw/xwin/XWin.exe.manifest b/hw/xwin/XWin.exe.manifest
index 221150d52..a0d4d7dae 100755
--- a/hw/xwin/XWin.exe.manifest
+++ b/hw/xwin/XWin.exe.manifest
@@ -13,4 +13,9 @@
/>
</dependentAssembly>
</dependency>
+ <asmv3:application xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
+ <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
+ <dpiAware>true</dpiAware>
+ </asmv3:windowsSettings>
+ </asmv3:application>
</assembly>
diff --git a/hw/xwin/win.h b/hw/xwin/win.h
index 5b2c8a24f..a43b94ac2 100644
--- a/hw/xwin/win.h
+++ b/hw/xwin/win.h
@@ -64,7 +64,7 @@
#define WIN_DEFAULT_BLACKPIXEL 0
#define WIN_DEFAULT_LINEBIAS 0
#define WIN_DEFAULT_E3B_TIME 50 /* milliseconds */
-#define WIN_DEFAULT_DPI 75
+#define WIN_DEFAULT_DPI 96
#define WIN_DEFAULT_REFRESH 0
#define WIN_DEFAULT_WIN_KILL TRUE
#define WIN_DEFAULT_UNIX_KILL FALSE
diff --git a/hw/xwin/winprocarg.c b/hw/xwin/winprocarg.c
index ddfe1f5b7..0c24b083c 100644
--- a/hw/xwin/winprocarg.c
+++ b/hw/xwin/winprocarg.c
@@ -88,12 +88,27 @@ winInitializeScreenDefaults(void)
dwWidth = GetSystemMetrics (SM_CXSCREEN);
dwHeight = GetSystemMetrics (SM_CYSCREEN);
- winErrorFVerb (2, "winInitializeScreenDefaults - w %d h %d\n",
- (int) dwWidth, (int) dwHeight);
+ winErrorFVerb(2, "winInitializeScreenDefaults - primary monitor w %d h %d\n", (int) dwWidth, (int) dwHeight);
- /* Set a default DPI, if no parameter was passed */
+ /* Set a default DPI, if no '-dpi' option was used */
if (monitorResolution == 0)
- monitorResolution = WIN_DEFAULT_DPI;
+ {
+ HDC hdc = GetDC(NULL);
+ if (hdc)
+ {
+ int dpiX = GetDeviceCaps(hdc, LOGPIXELSX);
+ int dpiY = GetDeviceCaps(hdc, LOGPIXELSY);
+
+ winErrorFVerb(2, "winInitializeDefaultScreens - native DPI x %d y %d\n", dpiX, dpiY);
+ monitorResolution = dpiY;
+ ReleaseDC(NULL, hdc);
+ }
+ else
+ {
+ winErrorFVerb(1, "winInitializeDefaultScreens - Failed to retrieve native DPI, falling back to default of %d DPI\n", WIN_DEFAULT_DPI);
+ monitorResolution = WIN_DEFAULT_DPI;
+ }
+ }
defaultScreenInfo.iMonitor = 1;
defaultScreenInfo.dwWidth = dwWidth;