git.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
   8 struct TouchButton {
   9         unsigned short mask;
  10         unsigned short x, y;
  11         unsigned short x2, y2;
  12         float fx, fy;
  13         float fw, fh;
  14 };
  15
  16 #define TOUCH_BUTTON_INITIALIZER(name, x, y, w, h) \
  17         {SNES_##name##_MASK, 0, 0, 0, 0, x, y, w, h}
  18
  19 static TouchButton touchbuttons[] = {
  20         TOUCH_BUTTON_INITIALIZER(TL, 0, 0, 0.375, 0.0833),
  21         TOUCH_BUTTON_INITIALIZER(TR, 0.625, 0, 0.375, 0.0833),
  22         TOUCH_BUTTON_INITIALIZER(UP, 0.125, 0.0833, 0.125, 0.2777), //2
  23         TOUCH_BUTTON_INITIALIZER(LEFT, 0.0, 0.3611, 0.125, 0.2777), //3
  24         TOUCH_BUTTON_INITIALIZER(RIGHT, 0.25, 0.3611, 0.125, 0.2777), //4
  25         TOUCH_BUTTON_INITIALIZER(DOWN, 0.125, 0.6388, 0.125, 0.2777), //5
  26         TOUCH_BUTTON_INITIALIZER(START, 0, 0.9166, 0.375, 0.0833),
  27         TOUCH_BUTTON_INITIALIZER(Y, 0.75, 0.0833, 0.125, 0.2777),
  28         TOUCH_BUTTON_INITIALIZER(X, 0.625, 0.3611, 0.125, 0.2777),
  29         TOUCH_BUTTON_INITIALIZER(A, 0.875, 0.3611, 0.125, 0.2777),
  30         TOUCH_BUTTON_INITIALIZER(B, 0.75, 0.6388, 0.125, 0.2777),
  31         TOUCH_BUTTON_INITIALIZER(SELECT, 0.625, 0.9166, 0.375, 0.0833),
  32 };
  33
  34 static TouchButton* current = 0;
  35
  36 static uint32 joypads[2];
  37 static struct {
  38         unsigned x;
  39         unsigned y;
  40         bool enabled, pressed;
  41 } mouse;
  42
  43 static TouchButton* getButtonFor(unsigned int x, unsigned int y) {
  44         unsigned int i;
  45
  46         for (i = 0; i < sizeof(touchbuttons)/sizeof(TouchButton); i++) {
  47                 if (x > touchbuttons[i].x && x < touchbuttons[i].x2 &&
  48                         y > touchbuttons[i].y && y < touchbuttons[i].y2) {
  49
  50                         return &touchbuttons[i];
  51                 }
  52         }
  53
  54         return 0;
  55 }
  56
  57 static inline void unpress(TouchButton* b) {
  58         joypads[0] &= ~b->mask;
  59 }
  60 static inline void press(TouchButton* b) {
  61         joypads[0] |= b->mask;
  62 }
  63
  64 static void processMouse(unsigned int x, unsigned int y, int pressed = 0)
  65 {
  66         if (Config.touchscreenInput) {
  67                 if (pressed < 0) {
  68                         // Button up.
  69                         if (current) {
  70                                 // Leaving button
  71                                 unpress(current);
  72                                 current = 0;
  73                         }
  74                 } else {
  75                         // Button down, or mouse motion.
  76                         TouchButton* b = getButtonFor(x, y);
  77                         if (current && b && current != b) {
  78                                 // Moving from button to button
  79                                 unpress(current);
  80                                 current = b;
  81                                 press(current);
  82                         } else if (current && !b) {
  83                                 // Leaving button
  84                                 unpress(current);
  85                                 current = 0;
  86                         } else if (!current && b) {
  87                                 // Entering button
  88                                 current = b;
  89                                 press(current);
  90                         }
  91                 }
  92         } else if (mouse.enabled) {
  93                 mouse.x = x;
  94                 mouse.y = y;
  95
  96                 if (mouse.x < GUI.RenderX) mouse.x = 0;
  97                 else {
  98                         mouse.x -= GUI.RenderX;
  99                         if (mouse.x > GUI.RenderW) mouse.x = GUI.RenderW;
 100                 }
 101
 102                 if (mouse.y < GUI.RenderY) mouse.y = 0;
 103                 else {
 104                         mouse.y -= GUI.RenderY;
 105                         if (mouse.y > GUI.RenderH) mouse.y = GUI.RenderH;
 106                 }
 107
 108                 // Take care of scaling
 109                 mouse.x /= GUI.Scale;
 110                 mouse.y /= GUI.Scale;
 111
 112                 if (pressed > 0)
 113                         mouse.pressed = true;
 114                 else if (pressed < 0)
 115                         mouse.pressed = false;
 116         }
 117 }
 118
 119 static void processEvent(const SDL_Event& event)
 120 {
 121         switch (event.type)
 122         {
 123         case SDL_KEYDOWN:
 124                 if (Config.action[event.key.keysym.scancode])
 125                         S9xDoAction(Config.action[event.key.keysym.scancode]);
 126                 joypads[0] |= Config.joypad1Mapping[event.key.keysym.scancode];
 127                 break;
 128         case SDL_KEYUP:
 129                 joypads[0] &= ~Config.joypad1Mapping[event.key.keysym.scancode];
 130                 break;
 131         case SDL_MOUSEBUTTONUP:
 132         case SDL_MOUSEBUTTONDOWN:
 133                 processMouse(event.button.x, event.button.y,
 134                                 (event.button.state == SDL_PRESSED) ? 1 : - 1);
 135                 break;
 136         case SDL_MOUSEMOTION:
 137                 processMouse(event.motion.x, event.motion.y);
 138                 break;
 139         case SDL_QUIT:
 140                 Config.quitting = true;
 141                 break;
 142         }
 143 }
 144
 145 uint32 S9xReadJoypad (int which)
 146 {
 147         if (which < 0 || which > 2) {
 148                 return 0;
 149         }
 150
 151         return joypads[which];
 152 }
 153
 154 bool8 S9xReadMousePosition(int which1, int& x, int& y, uint32& buttons)
 155 {
 156         if (which1 != 0) return FALSE;
 157
 158         x = mouse.x;
 159         y = mouse.y;
 160         buttons = mouse.pressed ? 1 : 0;
 161
 162         return TRUE;
 163 }
 164
 165 bool8 S9xReadSuperScopePosition(int& x, int& y, uint32& buttons)
 166 {
 167         x = mouse.x;
 168         y = mouse.y;
 169         buttons = mouse.pressed ? 8 : 0;
 170
 171         return TRUE;
 172 }
 173
 174 void S9xProcessEvents(bool8_32 block)
 175 {
 176         SDL_Event event;
 177
 178         if (block) {
 179                 SDL_WaitEvent(&event);
 180                 processEvent(event);
 181         } else {
 182                 while(SDL_PollEvent(&event))
 183                 {
 184                         processEvent(event);
 185                 }
 186         }
 187 }
 188
 189 void S9xInitInputDevices()
 190 {
 191         joypads[0] = 0;
 192         joypads[1] = 0;
 193
 194         switch (Settings.ControllerOption) {
 195                 case SNES_JOYPAD:
 196                         joypads[0] = 0x80000000UL;
 197                         printf("Input: 1 joypad, keyboard only\n");
 198                         break;
 199                 case SNES_MOUSE:
 200                         joypads[0] = 0x80000000UL;
 201                         mouse.enabled = true;
 202                         printf("Input: 1 joypad + mouse\n");
 203                         break;
 204                 case SNES_MOUSE_SWAPPED:
 205                         printf("Input: mouse\n");
 206                         mouse.enabled = true;
 207                         break;
 208                 case SNES_SUPERSCOPE:
 209                         joypads[0] = 0x80000000UL;
 210                         mouse.enabled = true;
 211                         printf("Input: 1 joypad + superscope\n");
 212                         break;
 213                 default:
 214                         printf("Input: unknown\n");
 215                         break;
 216         }
 217
 218         S9xInputScreenChanged();
 219 }
 220
 221 void S9xDeinitInputDevices()
 222 {
 223
 224 }
 225
 226 void S9xInputScreenChanged()
 227 {
 228         unsigned int i = 0;
 229         const unsigned int w = GUI.Width, h = GUI.Height;
 230         for (i = 0; i < sizeof(touchbuttons)/sizeof(TouchButton); i++) {
 231                 touchbuttons[i].x = (unsigned)round(touchbuttons[i].fx * w);
 232                 touchbuttons[i].y = (unsigned)round(touchbuttons[i].fy * h);
 233                 touchbuttons[i].x2 = (unsigned)round(touchbuttons[i].x + touchbuttons[i].fw * w);
 234                 touchbuttons[i].y2 = (unsigned)round(touchbuttons[i].y + touchbuttons[i].fh * h);
 235         }
 236 }
 237
 238 template <typename T>
 239 static void drawControls(T * buffer, const int pitch)
 240 {
 241         unsigned int i = 0;
 242         int x, y;
 243         T* temp;
 244
 245         for (i = 0; i < sizeof(touchbuttons)/sizeof(TouchButton); i++) {
 246                 temp = buffer + touchbuttons[i].y * pitch + touchbuttons[i].x;
 247                 for (x = touchbuttons[i].x; x < touchbuttons[i].x2; x++) {
 248                         *temp = -1UL; // Black
 249                         temp++;
 250                 }
 251                 temp = buffer + touchbuttons[i].y2 * pitch + touchbuttons[i].x;
 252                 for (x = touchbuttons[i].x; x < touchbuttons[i].x2; x++) {
 253                         *temp = -1UL; // Black
 254                         temp++;
 255                 }
 256                 temp = buffer + touchbuttons[i].y * pitch + touchbuttons[i].x;
 257                 for (y = touchbuttons[i].y; y < touchbuttons[i].y2; y++) {
 258                         *temp = -1UL; // Black
 259                         temp+=pitch;
 260                 }
 261                 temp = buffer + touchbuttons[i].y * pitch + touchbuttons[i].x2;
 262                 for (y = touchbuttons[i].y; y < touchbuttons[i].y2; y++) {
 263                         *temp = -1UL; // Black
 264                         temp+=pitch;
 265                 }
 266         }
 267 }
 268
 269 void S9xInputScreenDraw(int pixelSize, void * buffer, int pitch)
 270 {
 271         switch (pixelSize)
 272         {
 273                 case 1:
 274                         drawControls(reinterpret_cast<uint8*>(buffer), pitch);
 275                         break;
 276                 case 2:
 277                         drawControls(reinterpret_cast<uint16*>(buffer), pitch / 2);
 278                         break;
 279         }
 280 }
 281