[ros-diffs] [reactos] 01/01: [Win32SS] Implement EngCreate/DeletePalette.

[jimtabor]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=c698eff041ef60bab147f…

commit c698eff041ef60bab147f9feae57fab816327984
Author:     jimtabor <james.tabor(a)reactos.org>
AuthorDate: Tue Sep 3 14:36:20 2019 -0500
Commit:     jimtabor <james.tabor(a)reactos.org>
CommitDate: Tue Sep 3 14:36:20 2019 -0500

    [Win32SS] Implement EngCreate/DeletePalette.
    
    Safe to be called from user side without UMPD support.
---
 win32ss/gdi/eng/umpdstubs.c | 25 --------------------
 win32ss/gdi/ntgdi/palette.c | 56 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 25 deletions(-)

diff --git a/win32ss/gdi/eng/umpdstubs.c b/win32ss/gdi/eng/umpdstubs.c
index acb280ff273..de2a2c6e0e5 100644
--- a/win32ss/gdi/eng/umpdstubs.c
+++ b/win32ss/gdi/eng/umpdstubs.c
@@ -211,21 +211,6 @@ NtGdiEngCreateDeviceSurface(
     return NULL;
 }
 
-__kernel_entry
-HPALETTE
-APIENTRY
-NtGdiEngCreatePalette(
-    _In_ ULONG iMode,
-    _In_ ULONG cColors,
-    _In_ ULONG *pulColors,
-    _In_ FLONG flRed,
-    _In_ FLONG flGreen,
-    _In_ FLONG flBlue)
-{
-    UNIMPLEMENTED;
-    return NULL;
-}
-
 __kernel_entry
 NTSTATUS
 APIENTRY
@@ -236,16 +221,6 @@ NtGdiEngDeleteClip(
     return STATUS_NOT_IMPLEMENTED;
 }
 
-__kernel_entry
-BOOL
-APIENTRY
-NtGdiEngDeletePalette(
-    _In_ HPALETTE hPal)
-{
-    UNIMPLEMENTED;
-    return FALSE;
-}
-
 __kernel_entry
 NTSTATUS
 APIENTRY
diff --git a/win32ss/gdi/ntgdi/palette.c b/win32ss/gdi/ntgdi/palette.c
index ef4509153e6..18234566ee9 100644
--- a/win32ss/gdi/ntgdi/palette.c
+++ b/win32ss/gdi/ntgdi/palette.c
@@ -12,6 +12,9 @@
 #define NDEBUG
 #include <debug.h>
 
+#define PAL_SETOWNER 0x8000
+#define MAX_PALCOLORS 65536
+
 static UINT SystemPaletteUse = SYSPAL_NOSTATIC;  /* The program need save the pallete and
restore it */
 
 PALETTE gpalRGB, gpalBGR, gpalRGB555, gpalRGB565, *gppalMono, *gppalDefault;
@@ -1263,5 +1266,58 @@ NtGdiUnrealizeObject(HGDIOBJ hgdiobj)
    return Ret;
 }
 
+__kernel_entry
+HPALETTE
+APIENTRY
+NtGdiEngCreatePalette(
+    _In_ ULONG iMode,
+    _In_ ULONG cColors,
+    _In_ ULONG *pulColors,
+    _In_ FLONG flRed,
+    _In_ FLONG flGreen,
+    _In_ FLONG flBlue)
+{
+    HPALETTE hPal = NULL;
+    ULONG *pulcSafe, ulColors[WINDDI_MAXSETPALETTECOLORS];
+
+    if ( cColors > MAX_PALCOLORS ) return NULL;
+
+    if ( cColors <= WINDDI_MAXSETPALETTECOLORS )
+    {
+        pulcSafe = ulColors;
+    }
+    else
+    {
+        pulcSafe = ExAllocatePoolWithTag(PagedPool, cColors * sizeof(ULONG), GDITAG_UMPD
);
+    }
+
+        _SEH2_TRY
+    {
+        ProbeForRead( pulColors, cColors * sizeof(ULONG), 1);
+        RtlCopyMemory( pulcSafe, pulColors, cColors * sizeof(ULONG) );
+    }
+    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+    {
+        SetLastNtError(_SEH2_GetExceptionCode());
+        if ( cColors > WINDDI_MAXSETPALETTECOLORS ) ExFreePoolWithTag( pulcSafe,
GDITAG_UMPD );
+        _SEH2_YIELD(return hPal);
+    }
+    _SEH2_END;
+
+    hPal = EngCreatePalette( iMode/*|PAL_SETOWNER*/, cColors, pulColors, flRed, flGreen,
flBlue );
+
+    if ( cColors > WINDDI_MAXSETPALETTECOLORS ) ExFreePoolWithTag( pulcSafe,
GDITAG_UMPD );
+
+    return hPal;
+}
+
+__kernel_entry
+BOOL
+APIENTRY
+NtGdiEngDeletePalette(
+    _In_ HPALETTE hPal)
+{
+    return EngDeletePalette(hPal);
+}
 
 /* EOF */