ref: c866e24f9a39e015071cd27311b557fb0ef43b41
dir: /windows.c/
/*
* windows.c: Windows front end for my puzzle collection.
*/
#include <windows.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <time.h>
#include "puzzles.h"
struct frontend {
midend_data *me;
HWND hwnd;
HBITMAP bitmap, prevbm;
HDC hdc_bm;
COLORREF *colours;
HBRUSH *brushes;
HPEN *pens;
UINT timer;
};
void fatal(char *fmt, ...)
{
char buf[2048];
va_list ap;
va_start(ap, fmt);
vsprintf(buf, fmt, ap);
va_end(ap);
MessageBox(NULL, buf, "Fatal error", MB_ICONEXCLAMATION | MB_OK);
exit(1);
}
void frontend_default_colour(frontend *fe, float *output)
{
DWORD c = GetSysColor(COLOR_MENU); /* ick */
output[0] = (float)(GetRValue(c) / 255.0);
output[1] = (float)(GetGValue(c) / 255.0);
output[2] = (float)(GetBValue(c) / 255.0);
}
void draw_rect(frontend *fe, int x, int y, int w, int h, int colour)
{
HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[colour]);
HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
Rectangle(fe->hdc_bm, x, y, x+w, y+h);
SelectObject(fe->hdc_bm, oldbrush);
SelectObject(fe->hdc_bm, oldpen);
}
void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour)
{
HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
MoveToEx(fe->hdc_bm, x1, y1, NULL);
LineTo(fe->hdc_bm, x2, y2);
SetPixel(fe->hdc_bm, x2, y2, fe->colours[colour]);
SelectObject(fe->hdc_bm, oldpen);
}
void draw_polygon(frontend *fe, int *coords, int npoints,
int fill, int colour)
{
POINT *pts = snewn(npoints+1, POINT);
int i;
for (i = 0; i <= npoints; i++) {
int j = (i < npoints ? i : 0);
pts[i].x = coords[j*2];
pts[i].y = coords[j*2+1];
}
if (fill) {
HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[colour]);
HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
Polygon(fe->hdc_bm, pts, npoints);
SelectObject(fe->hdc_bm, oldbrush);
SelectObject(fe->hdc_bm, oldpen);
} else {
HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
Polyline(fe->hdc_bm, pts, npoints+1);
SelectObject(fe->hdc_bm, oldpen);
}
sfree(pts);
}
void start_draw(frontend *fe)
{
HDC hdc_win;
hdc_win = GetDC(fe->hwnd);
fe->hdc_bm = CreateCompatibleDC(hdc_win);
fe->prevbm = SelectObject(fe->hdc_bm, fe->bitmap);
ReleaseDC(fe->hwnd, hdc_win);
}
void draw_update(frontend *fe, int x, int y, int w, int h)
{
RECT r;
r.left = x;
r.top = y;
r.right = x + w;
r.bottom = y + h;
InvalidateRect(fe->hwnd, &r, FALSE);
}
void end_draw(frontend *fe)
{
SelectObject(fe->hdc_bm, fe->prevbm);
DeleteDC(fe->hdc_bm);
}
void deactivate_timer(frontend *fe)
{
KillTimer(fe->hwnd, fe->timer);
fe->timer = 0;
}
void activate_timer(frontend *fe)
{
fe->timer = SetTimer(fe->hwnd, fe->timer, 20, NULL);
}
static frontend *new_window(HINSTANCE inst)
{
frontend *fe;
int x, y;
RECT r;
HDC hdc;
fe = snew(frontend);
fe->me = midend_new(fe);
midend_new_game(fe->me, NULL);
midend_size(fe->me, &x, &y);
fe->timer = 0;
{
int i, ncolours;
float *colours;
colours = midend_colours(fe->me, &ncolours);
fe->colours = snewn(ncolours, COLORREF);
fe->brushes = snewn(ncolours, HBRUSH);
fe->pens = snewn(ncolours, HPEN);
for (i = 0; i < ncolours; i++) {
fe->colours[i] = RGB(255 * colours[i*3+0],
255 * colours[i*3+1],
255 * colours[i*3+2]);
fe->brushes[i] = CreateSolidBrush(fe->colours[i]);
if (!fe->brushes[i])
MessageBox(fe->hwnd, "ooh", "eck", MB_OK);
fe->pens[i] = CreatePen(PS_SOLID, 1, fe->colours[i]);
}
}
r.left = r.top = 0;
r.right = x;
r.bottom = y;
AdjustWindowRectEx(&r, WS_OVERLAPPEDWINDOW &~
(WS_THICKFRAME | WS_MAXIMIZEBOX | WS_OVERLAPPED),
FALSE, 0);
fe->hwnd = CreateWindowEx(0, "puzzle", "puzzle",
WS_OVERLAPPEDWINDOW &~
(WS_THICKFRAME | WS_MAXIMIZEBOX),
CW_USEDEFAULT, CW_USEDEFAULT,
r.right - r.left, r.bottom - r.top,
NULL, NULL, inst, NULL);
hdc = GetDC(fe->hwnd);
fe->bitmap = CreateCompatibleBitmap(hdc, x, y);
ReleaseDC(fe->hwnd, hdc);
SetWindowLong(fe->hwnd, GWL_USERDATA, (LONG)fe);
ShowWindow(fe->hwnd, SW_NORMAL);
SetForegroundWindow(fe->hwnd);
midend_redraw(fe->me);
return fe;
}
static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam)
{
frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
switch (message) {
case WM_CLOSE:
DestroyWindow(hwnd);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
case WM_PAINT:
{
PAINTSTRUCT p;
HDC hdc, hdc2;
HBITMAP prevbm;
hdc = BeginPaint(hwnd, &p);
hdc2 = CreateCompatibleDC(hdc);
prevbm = SelectObject(hdc2, fe->bitmap);
BitBlt(hdc,
p.rcPaint.left, p.rcPaint.top,
p.rcPaint.right - p.rcPaint.left,
p.rcPaint.bottom - p.rcPaint.top,
hdc2,
p.rcPaint.left, p.rcPaint.top,
SRCCOPY);
SelectObject(hdc2, prevbm);
DeleteDC(hdc2);
EndPaint(hwnd, &p);
}
return 0;
case WM_KEYDOWN:
{
int key = -1;
switch (wParam) {
case VK_LEFT: key = CURSOR_LEFT; break;
case VK_RIGHT: key = CURSOR_RIGHT; break;
case VK_UP: key = CURSOR_UP; break;
case VK_DOWN: key = CURSOR_DOWN; break;
}
if (key != -1) {
if (!midend_process_key(fe->me, -1, -1, key))
PostQuitMessage(0);
}
}
break;
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
if (!midend_process_key(fe->me, LOWORD(lParam), HIWORD(lParam),
(message == WM_LBUTTONDOWN ? LEFT_BUTTON :
message == WM_RBUTTONDOWN ? RIGHT_BUTTON :
MIDDLE_BUTTON)))
PostQuitMessage(0);
break;
case WM_CHAR:
if (!midend_process_key(fe->me, -1, -1, (unsigned char)wParam))
PostQuitMessage(0);
return 0;
case WM_TIMER:
if (fe->timer)
midend_timer(fe->me, (float)0.02);
return 0;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
{
MSG msg;
srand(time(NULL));
if (!prev) {
WNDCLASS wndclass;
wndclass.style = 0;
wndclass.lpfnWndProc = WndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = inst;
wndclass.hIcon = LoadIcon(inst, IDI_APPLICATION);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground = NULL;
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = "puzzle";
RegisterClass(&wndclass);
}
new_window(inst);
while (GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}