vcs.maemo.org Git - drnoksnes/blob - platform/sdli.cpp

   1 #include <SDL.h>
   2 #include <math.h>
   3
   4 #include "platform.h"
   5 #include "snes9x.h"
   6 #include "display.h"
   7 #include "sdlv.h" // Dispatching video-related events
   8
   9 struct TouchButton {
  10         unsigned short mask;
  11         unsigned short x, y;
  12         unsigned short x2, y2;
  13         double fx, fy;
  14         double fw, fh;
  15 };
  16
  17 #define TOUCH_BUTTON_INITIALIZER(name, x, y, w, h) \
  18         {SNES_##name##_MASK, 0, 0, 0, 0, x, y, w, h}
  19
  20 #define kCornerButtonWidth      (0.375)
  21 #define kCornerButtonHeight     (0.0833333333334)
  22 #define kBigButtonWidth         (0.125)
  23 #define kBigButtonHeight        (0.2777777777778)
  24
  25 static TouchButton touchbuttons[] = {
  26         TOUCH_BUTTON_INITIALIZER(TL, 0.0, 0.0, kCornerButtonWidth, kCornerButtonHeight),
  27         TOUCH_BUTTON_INITIALIZER(TR, 0.625, 0.0, kCornerButtonWidth, kCornerButtonHeight),
  28         TOUCH_BUTTON_INITIALIZER(UP, kBigButtonWidth, kCornerButtonHeight, kBigButtonWidth, kBigButtonHeight),
  29         TOUCH_BUTTON_INITIALIZER(LEFT, 0.0, kCornerButtonHeight + kBigButtonHeight, kBigButtonWidth, kBigButtonHeight),
  30         TOUCH_BUTTON_INITIALIZER(RIGHT, 2.0 * kBigButtonWidth, kCornerButtonHeight + kBigButtonHeight, kBigButtonWidth, kBigButtonHeight),
  31         TOUCH_BUTTON_INITIALIZER(DOWN, kBigButtonWidth, 1.0 - (kCornerButtonHeight + kBigButtonHeight), kBigButtonWidth, kBigButtonHeight),
  32         TOUCH_BUTTON_INITIALIZER(SELECT, 0.0, 1.0 - kCornerButtonHeight, kCornerButtonWidth, kCornerButtonHeight),
  33         TOUCH_BUTTON_INITIALIZER(X, 1.0 - 2.0 * kBigButtonWidth, kCornerButtonHeight, kBigButtonWidth, kBigButtonHeight),
  34         TOUCH_BUTTON_INITIALIZER(Y, 1.0 - 3.0 * kBigButtonWidth, kCornerButtonHeight + kBigButtonHeight, kBigButtonWidth, kBigButtonHeight),
  35         TOUCH_BUTTON_INITIALIZER(A, 1.0 - kBigButtonWidth, kCornerButtonHeight + kBigButtonHeight, kBigButtonWidth, kBigButtonHeight),
  36         TOUCH_BUTTON_INITIALIZER(B, 1.0 - 2.0 * kBigButtonWidth, 1.0 - (kCornerButtonHeight + kBigButtonHeight), kBigButtonWidth, kBigButtonHeight),
  37         TOUCH_BUTTON_INITIALIZER(START, 1.0 - kCornerButtonWidth, 1.0 - kCornerButtonHeight, kCornerButtonWidth, kCornerButtonHeight),
  38 };
  39
  40 static TouchButton* current = 0;
  41
  42 static uint32 joypads[2];
  43 static struct {
  44         unsigned x;
  45         unsigned y;
  46         bool enabled, pressed;
  47 } mouse;
  48
  49 static TouchButton* getButtonFor(unsigned int x, unsigned int y) {
  50         unsigned int i;
  51
  52         for (i = 0; i < sizeof(touchbuttons)/sizeof(TouchButton); i++) {
  53                 if (x >= touchbuttons[i].x && x < touchbuttons[i].x2 &&
  54                         y >= touchbuttons[i].y && y < touchbuttons[i].y2) {
  55
  56                         return &touchbuttons[i];
  57                 }
  58         }
  59
  60         return 0;
  61 }
  62
  63 static inline void unpress(TouchButton* b) {
  64         joypads[0] &= ~b->mask;
  65 }
  66 static inline void press(TouchButton* b) {
  67         joypads[0] |= b->mask;
  68 }
  69
  70 static void processMouse(unsigned int x, unsigned int y, int pressed = 0)
  71 {
  72 #if CONF_EXIT_BUTTON
  73         /* no fullscreen escape button, we have to simulate one! */
  74         /* TODO: don't hardcode sizes */
  75         if (Config.fullscreen && x > (800 - 100) && y < 50 && pressed > 0) {
  76                 S9xDoAction(kActionQuit);
  77         }
  78 #endif
  79         if (Config.touchscreenInput) {
  80                 if (pressed < 0) {
  81                         // Button up.
  82                         if (current) {
  83                                 // Leaving button
  84                                 unpress(current);
  85                                 current = 0;
  86                         }
  87                 } else {
  88                         // Button down, or mouse motion.
  89                         TouchButton* b = getButtonFor(x, y);
  90                         if (current && b && current != b) {
  91                                 // Moving from button to button
  92                                 unpress(current);
  93                                 current = b;
  94                                 press(current);
  95                         } else if (current && !b) {
  96                                 // Leaving button
  97                                 unpress(current);
  98                                 current = 0;
  99                         } else if (!current && b) {
 100                                 // Entering button
 101                                 current = b;
 102                                 press(current);
 103                         }
 104                 }
 105         } else if (mouse.enabled) {
 106                 mouse.x = x;
 107                 mouse.y = y;
 108
 109                 if (mouse.x < GUI.RenderX) mouse.x = 0;
 110                 else {
 111                         mouse.x -= GUI.RenderX;
 112                         if (mouse.x > GUI.RenderW) mouse.x = GUI.RenderW;
 113                 }
 114
 115                 if (mouse.y < GUI.RenderY) mouse.y = 0;
 116                 else {
 117                         mouse.y -= GUI.RenderY;
 118                         if (mouse.y > GUI.RenderH) mouse.y = GUI.RenderH;
 119                 }
 120
 121                 // Take care of scaling
 122                 mouse.x /= GUI.ScaleX;
 123                 mouse.y /= GUI.ScaleY;
 124
 125                 if (pressed > 0)
 126                         mouse.pressed = true;
 127                 else if (pressed < 0)
 128                         mouse.pressed = false;
 129         }
 130 }
 131
 132 static void processEvent(const SDL_Event& event)
 133 {
 134         switch (event.type)
 135         {
 136                 case SDL_KEYDOWN:
 137                         if (Config.action[event.key.keysym.scancode])
 138                                 S9xDoAction(Config.action[event.key.keysym.scancode]);
 139                         joypads[0] |= Config.joypad1Mapping[event.key.keysym.scancode];
 140                         break;
 141                 case SDL_KEYUP:
 142                         joypads[0] &= ~Config.joypad1Mapping[event.key.keysym.scancode];
 143                         break;
 144                 case SDL_MOUSEBUTTONUP:
 145                 case SDL_MOUSEBUTTONDOWN:
 146                         processMouse(event.button.x, event.button.y,
 147                                         (event.button.state == SDL_PRESSED) ? 1 : - 1);
 148                         break;
 149                 case SDL_MOUSEMOTION:
 150                         processMouse(event.motion.x, event.motion.y);
 151                         break;
 152                 case SDL_QUIT:
 153                         Config.quitting = true;
 154                         break;
 155                 case SDL_ACTIVEEVENT:
 156                 case SDL_SYSWMEVENT:
 157                         processVideoEvent(event);
 158                         break;
 159         }
 160 }
 161
 162 uint32 S9xReadJoypad (int which)
 163 {
 164         if (which < 0 || which > 2) {
 165                 return 0;
 166         }
 167
 168         return joypads[which];
 169 }
 170
 171 bool8 S9xReadMousePosition(int which1, int& x, int& y, uint32& buttons)
 172 {
 173         if (which1 != 0) return FALSE;
 174
 175         x = mouse.x;
 176         y = mouse.y;
 177         buttons = mouse.pressed ? 1 : 0;
 178
 179         return TRUE;
 180 }
 181
 182 bool8 S9xReadSuperScopePosition(int& x, int& y, uint32& buttons)
 183 {
 184         x = mouse.x;
 185         y = mouse.y;
 186         buttons = mouse.pressed ? 8 : 0;
 187
 188         return TRUE;
 189 }
 190
 191 void S9xProcessEvents(bool8_32 block)
 192 {
 193         SDL_Event event;
 194
 195         if (block) {
 196                 SDL_WaitEvent(&event);
 197                 processEvent(event);
 198         } else {
 199                 while(SDL_PollEvent(&event)) {
 200                         processEvent(event);
 201                 }
 202         }
 203 }
 204
 205 void S9xInitInputDevices()
 206 {
 207         joypads[0] = 0;
 208         joypads[1] = 0;
 209         mouse.enabled = false;
 210         mouse.pressed = false;
 211
 212         switch (Settings.ControllerOption) {
 213                 case SNES_JOYPAD:
 214                         joypads[0] = 0x80000000UL;
 215                         printf("Input: 1 joypad, keyboard only\n");
 216                         break;
 217                 case SNES_MOUSE:
 218                         joypads[0] = 0x80000000UL;
 219                         mouse.enabled = true;
 220                         printf("Input: 1 joypad + mouse\n");
 221                         break;
 222                 case SNES_MOUSE_SWAPPED:
 223                         printf("Input: mouse\n");
 224                         mouse.enabled = true;
 225                         break;
 226                 case SNES_SUPERSCOPE:
 227                         joypads[0] = 0x80000000UL;
 228                         mouse.enabled = true;
 229                         printf("Input: 1 joypad + superscope\n");
 230                         break;
 231                 default:
 232                         printf("Input: unknown\n");
 233                         break;
 234         }
 235
 236         S9xInputScreenChanged();
 237 }
 238
 239 void S9xDeinitInputDevices()
 240 {
 241
 242 }
 243
 244 void S9xInputScreenChanged()
 245 {
 246         unsigned int i = 0;
 247         const unsigned int w = GUI.Width, h = GUI.Height;
 248         for (i = 0; i < sizeof(touchbuttons)/sizeof(TouchButton); i++) {
 249                 touchbuttons[i].x = (unsigned int)(touchbuttons[i].fx * w);
 250                 touchbuttons[i].y = (unsigned int)(touchbuttons[i].fy * h);
 251                 touchbuttons[i].x2 = (unsigned int)(touchbuttons[i].x + touchbuttons[i].fw * w);
 252                 touchbuttons[i].y2 = (unsigned int)(touchbuttons[i].y + touchbuttons[i].fh * h);
 253         }
 254 }
 255
 256 template <typename T>
 257 static void drawControls(T * buffer, const int pitch)
 258 {
 259         unsigned int i = 0;
 260         int x, y;
 261         const T black = static_cast<T>(0xFFFFFFFFU);
 262         T* temp;
 263
 264         for (i = 0; i < sizeof(touchbuttons)/sizeof(TouchButton); i++) {
 265                 temp = buffer + touchbuttons[i].y * pitch + touchbuttons[i].x;
 266                 for (x = touchbuttons[i].x; x < touchbuttons[i].x2; x++) {
 267                         *temp = black;
 268                         temp++;
 269                 }
 270                 temp = buffer + touchbuttons[i].y2 * pitch + touchbuttons[i].x;
 271                 for (x = touchbuttons[i].x; x < touchbuttons[i].x2; x++) {
 272                         *temp = black;
 273                         temp++;
 274                 }
 275                 temp = buffer + touchbuttons[i].y * pitch + touchbuttons[i].x;
 276                 for (y = touchbuttons[i].y; y < touchbuttons[i].y2; y++) {
 277                         *temp = black;
 278                         temp+=pitch;
 279                 }
 280                 temp = buffer + touchbuttons[i].y * pitch + touchbuttons[i].x2;
 281                 for (y = touchbuttons[i].y; y < touchbuttons[i].y2; y++) {
 282                         *temp = black;
 283                         temp+=pitch;
 284                 }
 285         }
 286 }
 287
 288 void S9xInputScreenDraw(int pixelSize, void * buffer, int pitch)
 289 {
 290         switch (pixelSize)
 291         {
 292                 case 1:
 293                         drawControls(reinterpret_cast<uint8*>(buffer), pitch);
 294                         break;
 295                 case 2:
 296                         drawControls(reinterpret_cast<uint16*>(buffer), pitch / 2);
 297                         break;
 298         }
 299 }
 300