152 lines
3.5 KiB
C++
152 lines
3.5 KiB
C++
// 8 september 2015
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#include "uipriv_windows.hpp"
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#include "area.hpp"
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uiWindowsDefineControl(
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uiArea // type name
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)
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static LRESULT CALLBACK areaWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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uiArea *a;
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CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam;
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RECT client;
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WINDOWPOS *wp = (WINDOWPOS *) lParam;
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LRESULT lResult;
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a = (uiArea *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
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if (a == NULL) {
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if (uMsg == WM_CREATE) {
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a = (uiArea *) (cs->lpCreateParams);
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// assign a->hwnd here so we can use it immediately
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a->hwnd = hwnd;
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SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) a);
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}
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// fall through to DefWindowProcW() anyway
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return DefWindowProcW(hwnd, uMsg, wParam, lParam);
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}
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// always recreate the render target if necessary
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if (a->rt == NULL)
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a->rt = makeHWNDRenderTarget(a->hwnd);
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if (areaDoDraw(a, uMsg, wParam, lParam, &lResult) != FALSE)
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return lResult;
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if (uMsg == WM_WINDOWPOSCHANGED) {
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if ((wp->flags & SWP_NOSIZE) != 0)
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return DefWindowProcW(hwnd, uMsg, wParam, lParam);
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if (GetClientRect(a->hwnd, &client) == 0)
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logLastError(L"error getting client rect of uiArea for WM_WINDOWPOSCHANGED handling");
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areaDrawOnResize(a, &client);
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areaScrollOnResize(a, &client);
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return 0;
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}
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if (areaDoScroll(a, uMsg, wParam, lParam, &lResult) != FALSE)
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return lResult;
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if (areaDoEvents(a, uMsg, wParam, lParam, &lResult) != FALSE)
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return lResult;
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// nothing done
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return DefWindowProc(hwnd, uMsg, wParam, lParam);
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}
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// control implementation
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static void minimumSize(uiWindowsControl *c, uiWindowsSizing *d, intmax_t *width, intmax_t *height)
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{
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// TODO
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*width = 0;
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*height = 0;
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}
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ATOM registerAreaClass(HICON hDefaultIcon, HCURSOR hDefaultCursor)
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{
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WNDCLASSW wc;
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ZeroMemory(&wc, sizeof (WNDCLASSW));
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wc.lpszClassName = areaClass;
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wc.lpfnWndProc = areaWndProc;
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wc.hInstance = hInstance;
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wc.hIcon = hDefaultIcon;
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wc.hCursor = hDefaultCursor;
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wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
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// TODO specify CS_HREDRAW/CS_VREDRAW in addition to or instead of calling InvalidateRect(NULL) in WM_WINDOWPOSCHANGED above, or not at all?
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return RegisterClassW(&wc);
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}
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void unregisterArea(void)
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{
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if (UnregisterClassW(areaClass, hInstance) == 0)
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logLastError(L"error unregistering uiArea window class");
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}
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void uiAreaSetSize(uiArea *a, intmax_t width, intmax_t height)
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{
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a->scrollWidth = width;
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a->scrollHeight = height;
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areaUpdateScroll(a);
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}
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void uiAreaQueueRedrawAll(uiArea *a)
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{
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// don't erase the background; we do that ourselves in doPaint()
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if (InvalidateRect(a->hwnd, NULL, FALSE) == 0)
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logLastError(L"error queueing uiArea redraw");
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}
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void uiAreaScrollTo(uiArea *a, double x, double y, double width, double height)
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{
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// TODO
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}
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uiArea *uiNewArea(uiAreaHandler *ah)
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{
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uiArea *a;
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a = (uiArea *) uiNewControl(uiAreaType());
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a->ah = ah;
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a->scrolling = FALSE;
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clickCounterReset(&(a->cc));
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// a->hwnd is assigned in areaWndProc()
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uiWindowsEnsureCreateControlHWND(0,
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areaClass, L"",
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0,
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hInstance, a,
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FALSE);
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uiWindowsFinishNewControl(a, uiArea);
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return a;
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}
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uiArea *uiNewScrollingArea(uiAreaHandler *ah, intmax_t width, intmax_t height)
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{
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uiArea *a;
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a = (uiArea *) uiNewControl(uiAreaType());
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a->ah = ah;
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a->scrolling = TRUE;
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a->scrollWidth = width;
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a->scrollHeight = height;
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clickCounterReset(&(a->cc));
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// a->hwnd is assigned in areaWndProc()
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uiWindowsEnsureCreateControlHWND(0,
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areaClass, L"",
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WS_HSCROLL | WS_VSCROLL,
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hInstance, a,
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FALSE);
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// set initial scrolling parameters
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areaUpdateScroll(a);
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uiWindowsFinishNewControl(a, uiArea);
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return a;
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}
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