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Fixed caret position and visibility issues

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This commit is contained in:
narzoul 2016-02-15 22:32:02 +01:00
parent 941b55f546
commit 3588072155
1 changed files with 73 additions and 17 deletions
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90
DDrawCompat/CompatGdiCaret.cpp
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@ -38,6 +38,9 @@ namespace
}
};
BOOL WINAPI hideCaret(HWND hWnd);
BOOL WINAPI showCaret(HWND hWnd);
void drawCaret()
{
if (CompatGdi::beginGdiRendering())
@ -70,8 +73,13 @@ namespace
DWORD /*dwEventThread*/,
DWORD /*dwmsEventTime*/)
{
if (OBJID_CARET != idObject)
{
return;
}
CaretScopedThreadLock caretLock;
if (OBJID_CARET != idObject || !g_caret.isDrawn || g_caret.hwnd != hwnd)
if (!g_caret.isDrawn || g_caret.hwnd != hwnd)
{
return;
}
@ -90,6 +98,50 @@ namespace
}
}
void CALLBACK caretLocationChangeEvent(
HWINEVENTHOOK /*hWinEventHook*/,
DWORD /*event*/,
HWND hwnd,
LONG idObject,
LONG /*idChild*/,
DWORD /*dwEventThread*/,
DWORD /*dwmsEventTime*/)
{
if (OBJID_CARET != idObject)
{
return;
}
CaretScopedThreadLock caretLock;
if (g_caret.isDrawn && g_caret.hwnd == hwnd)
{
hideCaret(hwnd);
showCaret(hwnd);
}
}
void CALLBACK caretShowEvent(
HWINEVENTHOOK /*hWinEventHook*/,
DWORD /*event*/,
HWND hwnd,
LONG idObject,
LONG /*idChild*/,
DWORD /*dwEventThread*/,
DWORD /*dwmsEventTime*/)
{
if (OBJID_CARET != idObject)
{
return;
}
CaretScopedThreadLock caretLock;
if (!g_caret.isDrawn && g_caret.hwnd == hwnd)
{
drawCaret();
g_caret.isDrawn = true;
}
}
BOOL WINAPI createCaret(HWND hWnd, HBITMAP hBitmap, int nWidth, int nHeight)
{
BOOL result = CALL_ORIG_GDI(CreateCaret)(hWnd, hBitmap, nWidth, nHeight);
@ -107,6 +159,21 @@ namespace
return result;
}
BOOL WINAPI hideCaret(HWND hWnd)
{
BOOL result = CALL_ORIG_GDI(HideCaret)(hWnd);
if (result)
{
CaretScopedThreadLock caretLock;
if (g_caret.isDrawn)
{
drawCaret();
g_caret.isDrawn = false;
}
}
return result;
}
BOOL WINAPI showCaret(HWND hWnd)
{
if (!CALL_ORIG_GDI(ShowCaret)(hWnd))
@ -138,21 +205,6 @@ namespace
return TRUE;
}
BOOL WINAPI hideCaret(HWND hWnd)
{
BOOL result = CALL_ORIG_GDI(HideCaret)(hWnd);
if (result)
{
CaretScopedThreadLock caretLock;
if (g_caret.isDrawn)
{
drawCaret();
g_caret.isDrawn = false;
}
}
return result;
}
}
#define HOOK_GDI_FUNCTION(module, func, newFunc) \
@ -166,12 +218,16 @@ namespace CompatGdiCaret
DetourTransactionBegin();
HOOK_GDI_FUNCTION(user32, CreateCaret, createCaret);
HOOK_GDI_FUNCTION(user32, ShowCaret, showCaret);
HOOK_GDI_FUNCTION(user32, HideCaret, hideCaret);
HOOK_GDI_FUNCTION(user32, ShowCaret, showCaret);
DetourTransactionCommit();
const DWORD threadId = GetCurrentThreadId();
SetWinEventHook(EVENT_OBJECT_DESTROY, EVENT_OBJECT_DESTROY,
nullptr, &caretDestroyEvent, 0, threadId, WINEVENT_OUTOFCONTEXT);
SetWinEventHook(EVENT_OBJECT_LOCATIONCHANGE, EVENT_OBJECT_LOCATIONCHANGE,
nullptr, &caretLocationChangeEvent, 0, threadId, WINEVENT_OUTOFCONTEXT);
SetWinEventHook(EVENT_OBJECT_SHOW, EVENT_OBJECT_SHOW,
nullptr, &caretShowEvent, 0, threadId, WINEVENT_OUTOFCONTEXT);
}
}