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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>2011-11-02 13:56:22 +0000
commite2e6fab1efa6895256ac0ed4d5b054a88ad18077 (patch)
tree324382bb60dfc04d1797f19368cb33fe7b913cc1
parent8329afa59dd5ea3adf7adebdb2111a9bccbb126b (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> Reviewed-by: Colin Harrison <colin.harrison@virgin.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 9bee9b64f..445bcab48 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;