Bah, there's always one. Remove the now-erroneous `*.py' from the
[sgt/puzzles] / windows.c
index 30d223d..0171baa 100644 (file)
--- a/windows.c
+++ b/windows.c
@@ -1,14 +1,5 @@
 /*
  * windows.c: Windows front end for my puzzle collection.
- * 
- * TODO:
- * 
- *  - Figure out what to do if a puzzle requests a size bigger than
- *    the screen will take. In principle we could put scrollbars in
- *    the window, although that would be pretty horrid. Another
- *    option is to detect in advance that this will be a problem -
- *    we can probably tell this using midend_size() before actually
- *    generating the puzzle - and simply refuse to do it.
  */
 
 #include <windows.h>
 #define IDM_HELPC     0x00B0
 #define IDM_GAMEHELP  0x00C0
 #define IDM_ABOUT     0x00D0
+#define IDM_SAVE      0x00E0
+#define IDM_LOAD      0x00F0
 #define IDM_PRESETS   0x0100
 
 #define HELP_FILE_NAME  "puzzles.hlp"
 #define HELP_CNT_NAME   "puzzles.cnt"
 
-#ifdef DEBUG
+#ifdef DEBUGGING
 static FILE *debug_fp = NULL;
 static HANDLE debug_hdl = INVALID_HANDLE_VALUE;
 static int debug_got_console = 0;
@@ -90,8 +83,14 @@ struct cfg_aux {
     int ctlid;
 };
 
+struct blitter {
+    HBITMAP bitmap;
+    frontend *fe;
+    int x, y, w, h;
+};
+
 struct frontend {
-    midend_data *me;
+    midend *me;
     HWND hwnd, statusbar, cfgbox;
     HINSTANCE inst;
     HBITMAP bitmap, prevbm;
@@ -137,8 +136,9 @@ void get_random_seed(void **randseed, int *randseedsize)
     *randseedsize = sizeof(time_t);
 }
 
-void status_bar(frontend *fe, char *text)
+static void win_status_bar(void *handle, char *text)
 {
+    frontend *fe = (frontend *)handle;
     char *rewritten = midend_rewrite_statusbar(fe->me, text);
     if (!fe->laststatus || strcmp(rewritten, fe->laststatus)) {
        SetWindowText(fe->statusbar, rewritten);
@@ -149,6 +149,84 @@ void status_bar(frontend *fe, char *text)
     }
 }
 
+static blitter *win_blitter_new(void *handle, int w, int h)
+{
+    blitter *bl = snew(blitter);
+
+    memset(bl, 0, sizeof(blitter));
+    bl->w = w;
+    bl->h = h;
+    bl->bitmap = 0;
+
+    return bl;
+}
+
+static void win_blitter_free(void *handle, blitter *bl)
+{
+    if (bl->bitmap) DeleteObject(bl->bitmap);
+    sfree(bl);
+}
+
+static void blitter_mkbitmap(frontend *fe, blitter *bl)
+{
+    HDC hdc = GetDC(fe->hwnd);
+    bl->bitmap = CreateCompatibleBitmap(hdc, bl->w, bl->h);
+    ReleaseDC(fe->hwnd, hdc);
+}
+
+/* BitBlt(dstDC, dstX, dstY, dstW, dstH, srcDC, srcX, srcY, dType) */
+
+static void win_blitter_save(void *handle, blitter *bl, int x, int y)
+{
+    frontend *fe = (frontend *)handle;
+    HDC hdc_win, hdc_blit;
+    HBITMAP prev_blit;
+
+    if (!bl->bitmap) blitter_mkbitmap(fe, bl);
+
+    bl->x = x; bl->y = y;
+
+    hdc_win = GetDC(fe->hwnd);
+    hdc_blit = CreateCompatibleDC(hdc_win);
+    if (!hdc_blit) fatal("hdc_blit failed: 0x%x", GetLastError());
+
+    prev_blit = SelectObject(hdc_blit, bl->bitmap);
+    if (prev_blit == NULL || prev_blit == HGDI_ERROR)
+        fatal("SelectObject for hdc_main failed: 0x%x", GetLastError());
+
+    if (!BitBlt(hdc_blit, 0, 0, bl->w, bl->h,
+                fe->hdc_bm, x, y, SRCCOPY))
+        fatal("BitBlt failed: 0x%x", GetLastError());
+
+    SelectObject(hdc_blit, prev_blit);
+    DeleteDC(hdc_blit);
+    ReleaseDC(fe->hwnd, hdc_win);
+}
+
+static void win_blitter_load(void *handle, blitter *bl, int x, int y)
+{
+    frontend *fe = (frontend *)handle;
+    HDC hdc_win, hdc_blit;
+    HBITMAP prev_blit;
+
+    assert(bl->bitmap); /* we should always have saved before loading */
+
+    if (x == BLITTER_FROMSAVED) x = bl->x;
+    if (y == BLITTER_FROMSAVED) y = bl->y;
+
+    hdc_win = GetDC(fe->hwnd);
+    hdc_blit = CreateCompatibleDC(hdc_win);
+
+    prev_blit = SelectObject(hdc_blit, bl->bitmap);
+
+    BitBlt(fe->hdc_bm, x, y, bl->w, bl->h,
+           hdc_blit, 0, 0, SRCCOPY);
+
+    SelectObject(hdc_blit, prev_blit);
+    DeleteDC(hdc_blit);
+    ReleaseDC(fe->hwnd, hdc_win);
+}
+
 void frontend_default_colour(frontend *fe, float *output)
 {
     DWORD c = GetSysColor(COLOR_MENU); /* ick */
@@ -158,19 +236,22 @@ void frontend_default_colour(frontend *fe, float *output)
     output[2] = (float)(GetBValue(c) / 255.0);
 }
 
-void clip(frontend *fe, int x, int y, int w, int h)
+static void win_clip(void *handle, int x, int y, int w, int h)
 {
+    frontend *fe = (frontend *)handle;
     IntersectClipRect(fe->hdc_bm, x, y, x+w, y+h);
 }
 
-void unclip(frontend *fe)
+static void win_unclip(void *handle)
 {
+    frontend *fe = (frontend *)handle;
     SelectClipRgn(fe->hdc_bm, NULL);
 }
 
-void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
-               int align, int colour, char *text)
+static void win_draw_text(void *handle, int x, int y, int fonttype,
+                         int fontsize, int align, int colour, char *text)
 {
+    frontend *fe = (frontend *)handle;
     int i;
 
     /*
@@ -229,8 +310,9 @@ void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
     }
 }
 
-void draw_rect(frontend *fe, int x, int y, int w, int h, int colour)
+static void win_draw_rect(void *handle, int x, int y, int w, int h, int colour)
 {
+    frontend *fe = (frontend *)handle;
     if (w == 1 && h == 1) {
        /*
         * Rectangle() appears to get uppity if asked to draw a 1x1
@@ -248,8 +330,9 @@ void draw_rect(frontend *fe, int x, int y, int w, int h, int colour)
     }
 }
 
-void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour)
+static void win_draw_line(void *handle, int x1, int y1, int x2, int y2, int colour)
 {
+    frontend *fe = (frontend *)handle;
     HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]);
     MoveToEx(fe->hdc_bm, x1, y1, NULL);
     LineTo(fe->hdc_bm, x2, y2);
@@ -257,9 +340,32 @@ void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour)
     SelectObject(fe->hdc_bm, oldpen);
 }
 
-void draw_polygon(frontend *fe, int *coords, int npoints,
-                  int fill, int colour)
+static void win_draw_circle(void *handle, int cx, int cy, int radius,
+                           int fillcolour, int outlinecolour)
+{
+    frontend *fe = (frontend *)handle;
+    assert(outlinecolour >= 0);
+
+    if (fillcolour >= 0) {
+       HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[fillcolour]);
+       HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[outlinecolour]);
+       Ellipse(fe->hdc_bm, cx - radius, cy - radius,
+               cx + radius + 1, cy + radius + 1);
+       SelectObject(fe->hdc_bm, oldbrush);
+       SelectObject(fe->hdc_bm, oldpen);
+    } else {
+       HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[outlinecolour]);
+       Arc(fe->hdc_bm, cx - radius, cy - radius,
+           cx + radius + 1, cy + radius + 1,
+           cx - radius, cy, cx - radius, cy);
+       SelectObject(fe->hdc_bm, oldpen);
+    }
+}
+
+static void win_draw_polygon(void *handle, int *coords, int npoints,
+                            int fillcolour, int outlinecolour)
 {
+    frontend *fe = (frontend *)handle;
     POINT *pts = snewn(npoints+1, POINT);
     int i;
 
@@ -269,14 +375,16 @@ void draw_polygon(frontend *fe, int *coords, int npoints,
        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]);
+    assert(outlinecolour >= 0);
+
+    if (fillcolour >= 0) {
+       HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[fillcolour]);
+       HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[outlinecolour]);
        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]);
+       HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[outlinecolour]);
        Polyline(fe->hdc_bm, pts, npoints+1);
        SelectObject(fe->hdc_bm, oldpen);
     }
@@ -284,8 +392,9 @@ void draw_polygon(frontend *fe, int *coords, int npoints,
     sfree(pts);
 }
 
-void start_draw(frontend *fe)
+static void win_start_draw(void *handle)
 {
+    frontend *fe = (frontend *)handle;
     HDC hdc_win;
     hdc_win = GetDC(fe->hwnd);
     fe->hdc_bm = CreateCompatibleDC(hdc_win);
@@ -295,8 +404,9 @@ void start_draw(frontend *fe)
     SetMapMode(fe->hdc_bm, MM_TEXT);
 }
 
-void draw_update(frontend *fe, int x, int y, int w, int h)
+static void win_draw_update(void *handle, int x, int y, int w, int h)
 {
+    frontend *fe = (frontend *)handle;
     RECT r;
 
     r.left = x;
@@ -307,8 +417,9 @@ void draw_update(frontend *fe, int x, int y, int w, int h)
     InvalidateRect(fe->hwnd, &r, FALSE);
 }
 
-void end_draw(frontend *fe)
+static void win_end_draw(void *handle)
 {
+    frontend *fe = (frontend *)handle;
     SelectObject(fe->hdc_bm, fe->prevbm);
     DeleteDC(fe->hdc_bm);
     if (fe->clip) {
@@ -317,9 +428,29 @@ void end_draw(frontend *fe)
     }
 }
 
+const struct drawing_api win_drawing = {
+    win_draw_text,
+    win_draw_rect,
+    win_draw_line,
+    win_draw_polygon,
+    win_draw_circle,
+    win_draw_update,
+    win_clip,
+    win_unclip,
+    win_start_draw,
+    win_end_draw,
+    win_status_bar,
+    win_blitter_new,
+    win_blitter_free,
+    win_blitter_save,
+    win_blitter_load,
+    NULL, NULL, NULL, NULL, NULL, NULL, /* {begin,end}_{doc,page,puzzle} */
+    NULL,                             /* line_width */
+};
+
 void deactivate_timer(frontend *fe)
 {
-    KillTimer(fe->hwnd, fe->timer);
+    if (fe->hwnd) KillTimer(fe->hwnd, fe->timer);
     fe->timer = 0;
 }
 
@@ -331,6 +462,15 @@ void activate_timer(frontend *fe)
     }
 }
 
+/*
+ * Since this front end does not support printing (yet), we need
+ * this stub to satisfy the reference in midend_print_puzzle().
+ */
+void document_add_puzzle(document *doc, const game *game, game_params *par,
+                        game_state *st, game_state *st2)
+{
+}
+
 void write_clip(HWND hwnd, char *data)
 {
     HGLOBAL clipdata;
@@ -462,7 +602,7 @@ static frontend *new_window(HINSTANCE inst, char *game_id, char **error)
 
     fe = snew(frontend);
 
-    fe->me = midend_new(fe, &thegame);
+    fe->me = midend_new(fe, &thegame, &win_drawing, fe);
 
     if (game_id) {
         *error = midend_game_id(fe->me, game_id);
@@ -477,9 +617,11 @@ static frontend *new_window(HINSTANCE inst, char *game_id, char **error)
     find_help_file(fe);
 
     fe->inst = inst;
-    midend_new_game(fe->me);
 
     fe->timer = 0;
+    fe->hwnd = NULL;
+
+    midend_new_game(fe->me);
 
     fe->fonts = NULL;
     fe->nfonts = fe->fontsize = 0;
@@ -522,13 +664,23 @@ static frontend *new_window(HINSTANCE inst, char *game_id, char **error)
                              r.right - r.left, r.bottom - r.top,
                              NULL, NULL, inst, NULL);
 
-    if (midend_wants_statusbar(fe->me))
+    if (midend_wants_statusbar(fe->me)) {
+       RECT sr;
        fe->statusbar = CreateWindowEx(0, STATUSCLASSNAME, "ooh",
                                       WS_CHILD | WS_VISIBLE,
                                       0, 0, 0, 0, /* status bar does these */
                                       fe->hwnd, NULL, inst, NULL);
-    else
+       /*
+        * Now resize the window to take account of the status bar.
+        */
+       GetWindowRect(fe->statusbar, &sr);
+       GetWindowRect(fe->hwnd, &r);
+       SetWindowPos(fe->hwnd, NULL, 0, 0, r.right - r.left,
+                    r.bottom - r.top + sr.bottom - sr.top,
+                    SWP_NOMOVE | SWP_NOZORDER);
+    } else {
        fe->statusbar = NULL;
+    }
 
     {
        HMENU bar = CreateMenu();
@@ -568,6 +720,9 @@ static frontend *new_window(HINSTANCE inst, char *game_id, char **error)
        }
 
        AppendMenu(menu, MF_SEPARATOR, 0, 0);
+       AppendMenu(menu, MF_ENABLED, IDM_LOAD, "Load");
+       AppendMenu(menu, MF_ENABLED, IDM_SAVE, "Save");
+       AppendMenu(menu, MF_SEPARATOR, 0, 0);
        AppendMenu(menu, MF_ENABLED, IDM_UNDO, "Undo");
        AppendMenu(menu, MF_ENABLED, IDM_REDO, "Redo");
        if (thegame.can_format_as_text) {
@@ -1112,13 +1267,12 @@ static int get_config(frontend *fe, int which)
     return (fe->dlg_done == 2);
 }
 
-static void new_game_type(frontend *fe)
+static void new_game_size(frontend *fe)
 {
     RECT r, sr;
     HDC hdc;
     int x, y;
 
-    midend_new_game(fe->me);
     x = y = INT_MAX;
     midend_size(fe->me, &x, &y, FALSE);
 
@@ -1155,6 +1309,12 @@ static void new_game_type(frontend *fe)
     midend_redraw(fe->me);
 }
 
+static void new_game_type(frontend *fe)
+{
+    midend_new_game(fe->me);
+    new_game_size(fe);
+}
+
 static int is_alt_pressed(void)
 {
     BYTE keystate[256];
@@ -1168,17 +1328,34 @@ static int is_alt_pressed(void)
     return FALSE;
 }
 
+static void savefile_write(void *wctx, void *buf, int len)
+{
+    FILE *fp = (FILE *)wctx;
+    fwrite(buf, 1, len, fp);
+}
+
+static int savefile_read(void *wctx, void *buf, int len)
+{
+    FILE *fp = (FILE *)wctx;
+    int ret;
+
+    ret = fread(buf, 1, len, fp);
+    return (ret == len);
+}
+
 static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                                WPARAM wParam, LPARAM lParam)
 {
     frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
+    int cmd;
 
     switch (message) {
       case WM_CLOSE:
        DestroyWindow(hwnd);
        return 0;
       case WM_COMMAND:
-       switch (wParam & ~0xF) {       /* low 4 bits reserved to Windows */
+       cmd = wParam & ~0xF;           /* low 4 bits reserved to Windows */
+       switch (cmd) {
          case IDM_NEW:
            if (!midend_process_key(fe->me, 0, 0, 'n'))
                PostQuitMessage(0);
@@ -1231,6 +1408,92 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
           case IDM_ABOUT:
            about(fe);
             break;
+         case IDM_LOAD:
+         case IDM_SAVE:
+           {
+               OPENFILENAME of;
+               char filename[FILENAME_MAX];
+               int ret;
+
+               memset(&of, 0, sizeof(of));
+               of.hwndOwner = hwnd;
+               of.lpstrFilter = "All Files (*.*)\0*\0\0\0";
+               of.lpstrCustomFilter = NULL;
+               of.nFilterIndex = 1;
+               of.lpstrFile = filename;
+               filename[0] = '\0';
+               of.nMaxFile = lenof(filename);
+               of.lpstrFileTitle = NULL;
+               of.lpstrTitle = (cmd == IDM_SAVE ?
+                                "Enter name of game file to save" :
+                                "Enter name of saved game file to load");
+               of.Flags = 0;
+#ifdef OPENFILENAME_SIZE_VERSION_400
+               of.lStructSize = OPENFILENAME_SIZE_VERSION_400;
+#else
+               of.lStructSize = sizeof(of);
+#endif
+               of.lpstrInitialDir = NULL;
+
+               if (cmd == IDM_SAVE)
+                   ret = GetSaveFileName(&of);
+               else
+                   ret = GetOpenFileName(&of);
+
+               if (ret) {
+                   if (cmd == IDM_SAVE) {
+                       FILE *fp;
+
+                       if ((fp = fopen(filename, "r")) != NULL) {
+                           char buf[256 + FILENAME_MAX];
+                           fclose(fp);
+                           /* file exists */
+
+                           sprintf(buf, "Are you sure you want to overwrite"
+                                   " the file \"%.*s\"?",
+                                   FILENAME_MAX, filename);
+                           if (MessageBox(hwnd, buf, "Question",
+                                          MB_YESNO | MB_ICONQUESTION)
+                               != IDYES)
+                               break;
+                       }
+
+                       fp = fopen(filename, "w");
+
+                       if (!fp) {
+                           MessageBox(hwnd, "Unable to open save file",
+                                      "Error", MB_ICONERROR | MB_OK);
+                           break;
+                       }
+
+                       midend_serialise(fe->me, savefile_write, fp);
+
+                       fclose(fp);
+                   } else {
+                       FILE *fp = fopen(filename, "r");
+                       char *err;
+
+                       if (!fp) {
+                           MessageBox(hwnd, "Unable to open saved game file",
+                                      "Error", MB_ICONERROR | MB_OK);
+                           break;
+                       }
+
+                       err = midend_deserialise(fe->me, savefile_read, fp);
+
+                       fclose(fp);
+
+                       if (err) {
+                           MessageBox(hwnd, err, "Error", MB_ICONERROR|MB_OK);
+                           break;
+                       }
+
+                       new_game_size(fe);
+                   }
+               }
+           }
+
+           break;
           case IDM_HELPC:
             assert(fe->help_path);
             WinHelp(hwnd, fe->help_path,
@@ -1471,7 +1734,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
        RegisterClass(&wndclass);
     }
 
-    while (*cmdline && isspace(*cmdline))
+    while (*cmdline && isspace((unsigned char)*cmdline))
        cmdline++;
 
     if (!new_window(inst, *cmdline ? cmdline : NULL, &error)) {