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Implemented mouse event coordinates and proper render target size getting on Windows.

This commit is contained in:
Pietro Gagliardi 2015-10-14 09:31:31 -04:00
parent 191c026d29
commit 2b4ba6ad16
1 changed files with 35 additions and 14 deletions
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49
windows/area.c
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@ -24,17 +24,30 @@ uiWindowsDefineControl(
uiAreaType // type function
)
static HRESULT doPaint(uiArea *a, ID2D1RenderTarget *rt, RECT *client, RECT *clip)
// see https://sourceforge.net/p/mingw-w64/mailman/message/33176880/
// TODO highly unsafe code
static void rtGetSize(ID2D1RenderTarget *rt, D2D1_SIZE_F *size)
{
typedef void (*STDMETHODCALLTYPE gsp)(ID2D1RenderTarget *, D2D1_SIZE_F *);
gsp gs;
gs = (gsp) (rt->lpVtbl->GetSize);
(*gs)(rt, size);
}
static HRESULT doPaint(uiArea *a, ID2D1RenderTarget *rt, RECT *clip)
{
uiAreaHandler *ah = a->ah;
uiAreaDrawParams dp;
COLORREF bgcolorref;
D2D1_COLOR_F bgcolor;
D2D1_SIZE_F size;
dp.Context = newContext(rt);
dp.ClientWidth = client->right - client->left;
dp.ClientHeight = client->bottom - client->top;
rtGetSize(rt, &size);
dp.ClientWidth = size.width;
dp.ClientHeight = size.height;
dp.ClipX = clip->left;
dp.ClipY = clip->top;
@ -189,6 +202,7 @@ static void hscrollParams(uiArea *a, struct scrollParams *p)
ZeroMemory(p, sizeof (struct scrollParams));
p->pos = &(a->hscrollpos);
// TODO get rid of these and replace with points
if (GetClientRect(a->hwnd, &r) == 0)
logLastError("error getting area client rect in hscrollParams()");
p->pagesize = r.right - r.left;
@ -296,15 +310,24 @@ static void areaMouseEvent(uiArea *a, uintmax_t down, uintmax_t up, WPARAM wPar
{
uiAreaMouseEvent me;
uintmax_t button;
RECT r;
double xpix, ypix;
FLOAT dpix, dpiy;
D2D1_SIZE_F size;
me.X = GET_X_LPARAM(lParam);
me.Y = GET_Y_LPARAM(lParam);
if (a->rt == NULL)
a->rt = makeHWNDRenderTarget(a->hwnd);
if (GetClientRect(a->hwnd, &r) == 0)
logLastError("error getting client rect of area in areaMouseEvent()");
me.ClientWidth = r.right - r.left;
me.ClientHeight = r.bottom - r.top;
xpix = (double) GET_X_LPARAM(lParam);
ypix = (double) GET_Y_LPARAM(lParam);
// these are in pixels; we need points
ID2D1HwndRenderTarget_GetDpi(a->rt, &dpix, &dpiy);
// see https://msdn.microsoft.com/en-us/library/windows/desktop/dd756649%28v=vs.85%29.aspx (and others; search "direct2d mouse")
me.X = (xpix * 96) / dpix;
me.Y = (ypix * 96) / dpiy;
rtGetSize((ID2D1RenderTarget *) (a->rt), &size);
me.ClientWidth = size.width;
me.ClientHeight = size.height;
me.HScrollPos = a->hscrollpos;
me.VScrollPos = a->vscrollpos;
@ -515,8 +538,6 @@ static LRESULT CALLBACK areaWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM
case WM_PAINT:
if (a->rt == NULL)
a->rt = makeHWNDRenderTarget(a->hwnd);
if (GetClientRect(a->hwnd, &client) == 0)
logLastError("error getting client rect in WM_PAINT in areaWndProc()");
// do not clear the update rect; we do that ourselves in doPaint()
if (GetUpdateRect(a->hwnd, &clip, FALSE) == 0) {
// set a zero clip rect just in case GetUpdateRect() didn't change clip
@ -525,7 +546,7 @@ static LRESULT CALLBACK areaWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM
clip.right = 0;
clip.bottom = 0;
}
hr = doPaint(a, (ID2D1RenderTarget *) (a->rt), &client, &clip);
hr = doPaint(a, (ID2D1RenderTarget *) (a->rt), &clip);
switch (hr) {
case S_OK:
if (ValidateRect(a->hwnd, NULL) == 0)
@ -546,7 +567,7 @@ static LRESULT CALLBACK areaWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM
case WM_PRINTCLIENT:
if (GetClientRect(a->hwnd, &client) == 0)
logLastError("error getting client rect in WM_PRINTCLIENT in areaWndProc()");
//TODO doPaint(a, (HDC) wParam, &client, &client);
//TODO doPaint(a, (HDC) wParam, &client);
return 0;
case WM_WINDOWPOSCHANGED:
if ((wp->flags & SWP_NOSIZE) != 0)