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 #ifdef MAEMO
 109                 // Remember RenderH, RenderW is 2x if using Xsp.
 110                 if (Config.xsp) {
 111                         mouse.x /= 2;
 112                         mouse.y /= 2;
 113                 }
 114 #endif
 115
 116                 if (pressed > 0)
 117                         mouse.pressed = true;
 118                 else if (pressed < 0)
 119                         mouse.pressed = false;
 120         }
 121 }
 122
 123 static void processEvent(const SDL_Event& event)
 124 {
 125         switch (event.type)
 126         {
 127         case SDL_KEYDOWN:
 128                 if (Config.action[event.key.keysym.scancode])
 129                         S9xDoAction(Config.action[event.key.keysym.scancode]);
 130                 joypads[0] |= Config.joypad1Mapping[event.key.keysym.scancode];
 131                 break;
 132         case SDL_KEYUP:
 133                 joypads[0] &= ~Config.joypad1Mapping[event.key.keysym.scancode];
 134                 break;
 135         case SDL_MOUSEBUTTONUP:
 136         case SDL_MOUSEBUTTONDOWN:
 137                 processMouse(event.button.x, event.button.y,
 138                                 (event.button.state == SDL_PRESSED) ? 1 : - 1);
 139                 break;
 140         case SDL_MOUSEMOTION:
 141                 processMouse(event.motion.x, event.motion.y);
 142                 break;
 143         case SDL_QUIT:
 144                 Config.quitting = true;
 145                 break;
 146         }
 147 }
 148
 149 uint32 S9xReadJoypad (int which)
 150 {
 151         if (which < 0 || which > 2) {
 152                 return 0;
 153         }
 154
 155         return joypads[which];
 156 }
 157
 158 bool8 S9xReadMousePosition(int which1, int& x, int& y, uint32& buttons)
 159 {
 160         if (which1 != 0) return FALSE;
 161
 162         x = mouse.x;
 163         y = mouse.y;
 164         buttons = mouse.pressed ? 1 : 0;
 165
 166         return TRUE;
 167 }
 168
 169 bool8 S9xReadSuperScopePosition(int& x, int& y, uint32& buttons)
 170 {
 171         x = mouse.x;
 172         y = mouse.y;
 173         buttons = mouse.pressed ? 8 : 0;
 174
 175         return TRUE;
 176 }
 177
 178 void S9xProcessEvents(bool8_32 block)
 179 {
 180         SDL_Event event;
 181
 182         if (block) {
 183                 SDL_WaitEvent(&event);
 184                 processEvent(event);
 185         } else {
 186                 while(SDL_PollEvent(&event))
 187                 {
 188                         processEvent(event);
 189                 }
 190         }
 191 }
 192
 193 void S9xInitInputDevices()
 194 {
 195         joypads[0] = 0;
 196         joypads[1] = 0;
 197
 198         switch (Settings.ControllerOption) {
 199                 case SNES_JOYPAD:
 200                         joypads[0] = 0x80000000UL;
 201                         printf("Input: 1 joypad, keyboard only\n");
 202                         break;
 203                 case SNES_MOUSE:
 204                         joypads[0] = 0x80000000UL;
 205                         mouse.enabled = true;
 206                         printf("Input: 1 joypad + mouse\n");
 207                         break;
 208                 case SNES_MOUSE_SWAPPED:
 209                         printf("Input: mouse\n");
 210                         mouse.enabled = true;
 211                         break;
 212                 case SNES_SUPERSCOPE:
 213                         joypads[0] = 0x80000000UL;
 214                         mouse.enabled = true;
 215                         printf("Input: 1 joypad + superscope\n");
 216                         break;
 217                 default:
 218                         printf("Input: unknown\n");
 219                         break;
 220         }
 221
 222         S9xInputScreenChanged();
 223 }
 224
 225 void S9xDeinitInputDevices()
 226 {
 227
 228 }
 229
 230 void S9xInputScreenChanged()
 231 {
 232         unsigned int i = 0;
 233         const unsigned int w = GUI.Width, h = GUI.Height;
 234         for (i = 0; i < sizeof(touchbuttons)/sizeof(TouchButton); i++) {
 235                 touchbuttons[i].x = (unsigned)round(touchbuttons[i].fx * w);
 236                 touchbuttons[i].y = (unsigned)round(touchbuttons[i].fy * h);
 237                 touchbuttons[i].x2 = (unsigned)round(touchbuttons[i].x + touchbuttons[i].fw * w);
 238                 touchbuttons[i].y2 = (unsigned)round(touchbuttons[i].y + touchbuttons[i].fh * h);
 239         }
 240 }
 241