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user32: Implement monitor rectangle filtering on the user32 side. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2018-07-17 13:50:26 +02:00
parent 2be5b054d3
commit aac37e8d0b
1 changed files with 53 additions and 22 deletions
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75
dlls/user32/sysparams.c
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@ -21,6 +21,7 @@
#include "config.h"
#include <assert.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
@ -3562,49 +3563,79 @@ BOOL WINAPI GetMonitorInfoW( HMONITOR monitor, LPMONITORINFO info )
return ret;
}
struct enum_mon_data
{
MONITORENUMPROC proc;
LPARAM lparam;
HDC hdc;
POINT origin;
RECT limit;
};
#ifdef __i386__
/* Some apps pass a non-stdcall callback to EnumDisplayMonitors,
* so we need a small assembly wrapper to call it.
* MJ's Help Diagnostic expects that %ecx contains the address to the rect.
*/
struct enumdisplaymonitors_lparam
{
MONITORENUMPROC proc;
LPARAM lparam;
};
extern BOOL CALLBACK enumdisplaymonitors_callback_wrapper(HMONITOR monitor, HDC hdc, LPRECT rect, LPARAM lparam);
__ASM_STDCALL_FUNC( enumdisplaymonitors_callback_wrapper, 16,
extern BOOL enum_mon_callback_wrapper( HMONITOR monitor, LPRECT rect, struct enum_mon_data *data );
__ASM_GLOBAL_FUNC( enum_mon_callback_wrapper,
"pushl %ebp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
"movl %esp,%ebp\n\t"
__ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
"subl $8,%esp\n\t"
"movl 20(%ebp),%eax\n\t" /* struct enumdisplaymonitors_lparam *orig = (struct enumdisplaymonitors_lparam*)lparam */
"pushl 4(%eax)\n\t" /* push orig->lparam */
"pushl 16(%ebp)\n\t"
"pushl 12(%ebp)\n\t"
"pushl 8(%ebp)\n\t"
"movl 16(%ebp),%ecx\n\t"
"call *(%eax)\n\t" /* call orig->proc */
"movl 16(%ebp),%eax\n\t" /* data */
"movl 12(%ebp),%ecx\n\t" /* rect */
"pushl 4(%eax)\n\t" /* data->lparam */
"pushl %ecx\n\t" /* rect */
"pushl 8(%eax)\n\t" /* data->hdc */
"pushl 8(%ebp)\n\t" /* monitor */
"call *(%eax)\n\t" /* data->proc */
"leave\n\t"
__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
__ASM_CFI(".cfi_same_value %ebp\n\t")
"ret $16" )
"ret" )
#endif /* __i386__ */
static BOOL CALLBACK enum_mon_callback( HMONITOR monitor, HDC hdc, LPRECT rect, LPARAM lp )
{
struct enum_mon_data *data = (struct enum_mon_data *)lp;
RECT monrect = *rect;
OffsetRect( &monrect, -data->origin.x, -data->origin.y );
if (!IntersectRect( &monrect, &monrect, &data->limit )) return TRUE;
#ifdef __i386__
return enum_mon_callback_wrapper( monitor, &monrect, data );
#else
return data->proc( monitor, data->hdc, &monrect, data->lparam );
#endif
}
/***********************************************************************
* EnumDisplayMonitors (USER32.@)
*/
BOOL WINAPI EnumDisplayMonitors( HDC hdc, LPRECT rect, MONITORENUMPROC proc, LPARAM lp )
{
#ifdef __i386__
struct enumdisplaymonitors_lparam orig = { proc, lp };
proc = enumdisplaymonitors_callback_wrapper;
lp = (LPARAM)&orig;
#endif
return USER_Driver->pEnumDisplayMonitors( hdc, rect, proc, lp );
struct enum_mon_data data;
data.proc = proc;
data.lparam = lp;
data.hdc = hdc;
if (hdc)
{
if (!GetDCOrgEx( hdc, &data.origin )) return FALSE;
if (GetClipBox( hdc, &data.limit ) == ERROR) return FALSE;
}
else
{
data.origin.x = data.origin.y = 0;
data.limit.left = data.limit.top = INT_MIN;
data.limit.right = data.limit.bottom = INT_MAX;
}
if (rect && !IntersectRect( &data.limit, &data.limit, rect )) return TRUE;
return USER_Driver->pEnumDisplayMonitors( 0, NULL, enum_mon_callback, (LPARAM)&data );
}