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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
#include "_cgo_export.h"
#include "windriver.h"
#define windowClass L"shiny_Window"
static LRESULT CALLBACK windowWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
WINDOWPOS *wp = (WINDOWPOS *) lParam;
RECT r;
HDC dc;
switch (uMsg) {
case WM_PAINT:
handlePaint(hwnd);
break; // explicitly defer to DefWindowProc; it will handle validation for us
case WM_WINDOWPOSCHANGED:
if ((wp->flags & SWP_NOSIZE) != 0) {
break;
}
if (GetClientRect(hwnd, &r) == 0) {
/* TODO(andlabs) */;
}
sendSizeEvent(hwnd, &r);
return 0;
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
// TODO(andlabs): call SetFocus()?
case WM_LBUTTONUP:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
case WM_RBUTTONDOWN:
case WM_RBUTTONUP:
sendMouseEvent(hwnd, uMsg,
GET_X_LPARAM(lParam),
GET_Y_LPARAM(lParam));
return 0;
case WM_KEYDOWN:
case WM_KEYUP:
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
// TODO
break;
case msgFillSrc:
// TODO error checks
dc = GetDC(hwnd);
fillSrc(dc, (RECT *) lParam, (COLORREF) wParam);
ReleaseDC(hwnd, dc);
break;
case msgFillOver:
// TODO error checks
dc = GetDC(hwnd);
fillOver(dc, (RECT *) lParam, (COLORREF) wParam);
ReleaseDC(hwnd, dc);
break;
}
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
HRESULT initWindowClass(void) {
WNDCLASSW wc;
ZeroMemory(&wc, sizeof (WNDCLASSW));
wc.lpszClassName = windowClass;
wc.lpfnWndProc = windowWndProc;
wc.hInstance = thishInstance;
wc.hIcon = LoadIconW(NULL, IDI_APPLICATION);
if (wc.hIcon == NULL) {
return lastErrorToHRESULT();
}
wc.hCursor = LoadCursorW(NULL, IDC_ARROW);
if (wc.hCursor == NULL) {
return lastErrorToHRESULT();
}
// TODO(andlabs): change this to something else? NULL? the hollow brush?
wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
if (RegisterClassW(&wc) == 0) {
return lastErrorToHRESULT();
}
return S_OK;
}
HRESULT createWindow(HWND *phwnd) {
*phwnd = CreateWindowExW(0,
windowClass, L"Shiny Window",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, thishInstance, NULL);
if (*phwnd == NULL) {
return lastErrorToLRESULT();
}
// TODO(andlabs): use proper nCmdShow
ShowWindow(*phwnd, SW_SHOWDEFAULT);
// TODO(andlabs): call UpdateWindow()
return lS_OK;
}
void sendFill(HWND hwnd, UINT uMsg, RECT r, COLORREF color) {
// Note: this SendMessageW won't return until after the fill
// completes, so using &r is safe.
SendMessageW(hwnd, uMsg, (WPARAM) color, (LPARAM) (&r));
}
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