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
   8 struct TouchButton {
   9         unsigned short mask;
  10         unsigned short x, y;
  11         unsigned short x2, y2;
  12         double fx, fy;
  13         double 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 #define kCornerButtonWidth      (0.375)
  20 #define kCornerButtonHeight     (0.0833333333334)
  21 #define kBigButtonWidth         (0.125)
  22 #define kBigButtonHeight        (0.2777777777778)
  23
  24 static TouchButton touchbuttons[] = {
  25         TOUCH_BUTTON_INITIALIZER(TL, 0.0, 0.0, kCornerButtonWidth, kCornerButtonHeight),
  26         TOUCH_BUTTON_INITIALIZER(TR, 0.625, 0.0, kCornerButtonWidth, kCornerButtonHeight),
  27         TOUCH_BUTTON_INITIALIZER(UP, kBigButtonWidth, kCornerButtonHeight, kBigButtonWidth, kBigButtonHeight),
  28         TOUCH_BUTTON_INITIALIZER(LEFT, 0.0, kCornerButtonHeight + kBigButtonHeight, kBigButtonWidth, kBigButtonHeight),
  29         TOUCH_BUTTON_INITIALIZER(RIGHT, 2.0 * kBigButtonWidth, kCornerButtonHeight + kBigButtonHeight, kBigButtonWidth, kBigButtonHeight),
  30         TOUCH_BUTTON_INITIALIZER(DOWN, kBigButtonWidth, 1.0 - (kCornerButtonHeight + kBigButtonHeight), kBigButtonWidth, kBigButtonHeight),
  31         TOUCH_BUTTON_INITIALIZER(SELECT, 0.0, 1.0 - kCornerButtonHeight, kCornerButtonWidth, kCornerButtonHeight),
  32         TOUCH_BUTTON_INITIALIZER(X, 1.0 - 2.0 * kBigButtonWidth, kCornerButtonHeight, kBigButtonWidth, kBigButtonHeight),
  33         TOUCH_BUTTON_INITIALIZER(Y, 1.0 - 3.0 * kBigButtonWidth, kCornerButtonHeight + kBigButtonHeight, kBigButtonWidth, kBigButtonHeight),
  34         TOUCH_BUTTON_INITIALIZER(A, 1.0 - kBigButtonWidth, kCornerButtonHeight + kBigButtonHeight, kBigButtonWidth, kBigButtonHeight),
  35         TOUCH_BUTTON_INITIALIZER(B, 1.0 - 2.0 * kBigButtonWidth, 1.0 - (kCornerButtonHeight + kBigButtonHeight), kBigButtonWidth, kBigButtonHeight),
  36         TOUCH_BUTTON_INITIALIZER(START, 1.0 - kCornerButtonWidth, 1.0 - kCornerButtonHeight, kCornerButtonWidth, kCornerButtonHeight),
  37 };
  38
  39 static TouchButton* current = 0;
  40
  41 static uint32 joypads[2];
  42 static struct {
  43         unsigned x;
  44         unsigned y;
  45         bool enabled, pressed;
  46 } mouse;
  47
  48 static TouchButton* getButtonFor(unsigned int x, unsigned int y) {
  49         unsigned int i;
  50
  51         for (i = 0; i < sizeof(touchbuttons)/sizeof(TouchButton); i++) {
  52                 if (x >= touchbuttons[i].x && x < touchbuttons[i].x2 &&
  53                         y >= touchbuttons[i].y && y < touchbuttons[i].y2) {
  54
  55                         return &touchbuttons[i];
  56                 }
  57         }
  58
  59         return 0;
  60 }
  61
  62 static inline void unpress(TouchButton* b) {
  63         joypads[0] &= ~b->mask;
  64 }
  65 static inline void press(TouchButton* b) {
  66         joypads[0] |= b->mask;
  67 }
  68
  69 static void processMouse(unsigned int x, unsigned int y, int pressed = 0)
  70 {
  71         if (Config.touchscreenInput) {
  72                 if (pressed < 0) {
  73                         // Button up.
  74                         if (current) {
  75                                 // Leaving button
  76                                 unpress(current);
  77                                 current = 0;
  78                         }
  79                 } else {
  80                         // Button down, or mouse motion.
  81                         TouchButton* b = getButtonFor(x, y);
  82                         if (current && b && current != b) {
  83                                 // Moving from button to button
  84                                 unpress(current);
  85                                 current = b;
  86                                 press(current);
  87                         } else if (current && !b) {
  88                                 // Leaving button
  89                                 unpress(current);
  90                                 current = 0;
  91                         } else if (!current && b) {
  92                                 // Entering button
  93                                 current = b;
  94                                 press(current);
  95                         }
  96                 }
  97         } else if (mouse.enabled) {
  98                 mouse.x = x;
  99                 mouse.y = y;
 100
 101                 if (mouse.x < GUI.RenderX) mouse.x = 0;
 102                 else {
 103                         mouse.x -= GUI.RenderX;
 104                         if (mouse.x > GUI.RenderW) mouse.x = GUI.RenderW;
 105                 }
 106
 107                 if (mouse.y < GUI.RenderY) mouse.y = 0;
 108                 else {
 109                         mouse.y -= GUI.RenderY;
 110                         if (mouse.y > GUI.RenderH) mouse.y = GUI.RenderH;
 111                 }
 112
 113                 // Take care of scaling
 114                 mouse.x /= GUI.Scale;
 115                 mouse.y /= GUI.Scale;
 116
 117                 if (pressed > 0)
 118                         mouse.pressed = true;
 119                 else if (pressed < 0)
 120                         mouse.pressed = false;
 121         }
 122 }
 123
 124 static void processEvent(const SDL_Event& event)
 125 {
 126         switch (event.type)
 127         {
 128         case SDL_KEYDOWN:
 129                 if (Config.action[event.key.keysym.scancode])
 130                         S9xDoAction(Config.action[event.key.keysym.scancode]);
 131                 joypads[0] |= Config.joypad1Mapping[event.key.keysym.scancode];
 132                 break;
 133         case SDL_KEYUP:
 134                 joypads[0] &= ~Config.joypad1Mapping[event.key.keysym.scancode];
 135                 break;
 136         case SDL_MOUSEBUTTONUP:
 137         case SDL_MOUSEBUTTONDOWN:
 138                 processMouse(event.button.x, event.button.y,
 139                                 (event.button.state == SDL_PRESSED) ? 1 : - 1);
 140                 break;
 141         case SDL_MOUSEMOTION:
 142                 processMouse(event.motion.x, event.motion.y);
 143                 break;
 144         case SDL_QUIT:
 145                 Config.quitting = true;
 146                 break;
 147         }
 148 }
 149
 150 uint32 S9xReadJoypad (int which)
 151 {
 152         if (which < 0 || which > 2) {
 153                 return 0;
 154         }
 155
 156         return joypads[which];
 157 }
 158
 159 bool8 S9xReadMousePosition(int which1, int& x, int& y, uint32& buttons)
 160 {
 161         if (which1 != 0) return FALSE;
 162
 163         x = mouse.x;
 164         y = mouse.y;
 165         buttons = mouse.pressed ? 1 : 0;
 166
 167         return TRUE;
 168 }
 169
 170 bool8 S9xReadSuperScopePosition(int& x, int& y, uint32& buttons)
 171 {
 172         x = mouse.x;
 173         y = mouse.y;
 174         buttons = mouse.pressed ? 8 : 0;
 175
 176         return TRUE;
 177 }
 178
 179 void S9xProcessEvents(bool8_32 block)
 180 {
 181         SDL_Event event;
 182
 183         if (block) {
 184                 SDL_WaitEvent(&event);
 185                 processEvent(event);
 186         } else {
 187                 while(SDL_PollEvent(&event)) {
 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 int)(touchbuttons[i].fx * w);
 236                 touchbuttons[i].y = (unsigned int)(touchbuttons[i].fy * h);
 237                 touchbuttons[i].x2 = (unsigned int)(touchbuttons[i].x + touchbuttons[i].fw * w);
 238                 touchbuttons[i].y2 = (unsigned int)(touchbuttons[i].y + touchbuttons[i].fh * h);
 239         }
 240 }
 241
 242 template <typename T>
 243 static void drawControls(T * buffer, const int pitch)
 244 {
 245         unsigned int i = 0;
 246         int x, y;
 247         const T black = static_cast<T>(0xFFFFFFFFU);
 248         T* temp;
 249
 250         for (i = 0; i < sizeof(touchbuttons)/sizeof(TouchButton); i++) {
 251                 temp = buffer + touchbuttons[i].y * pitch + touchbuttons[i].x;
 252                 for (x = touchbuttons[i].x; x < touchbuttons[i].x2; x++) {
 253                         *temp = black;
 254                         temp++;
 255                 }
 256                 temp = buffer + touchbuttons[i].y2 * pitch + touchbuttons[i].x;
 257                 for (x = touchbuttons[i].x; x < touchbuttons[i].x2; x++) {
 258                         *temp = black;
 259                         temp++;
 260                 }
 261                 temp = buffer + touchbuttons[i].y * pitch + touchbuttons[i].x;
 262                 for (y = touchbuttons[i].y; y < touchbuttons[i].y2; y++) {
 263                         *temp = black;
 264                         temp+=pitch;
 265                 }
 266                 temp = buffer + touchbuttons[i].y * pitch + touchbuttons[i].x2;
 267                 for (y = touchbuttons[i].y; y < touchbuttons[i].y2; y++) {
 268                         *temp = black;
 269                         temp+=pitch;
 270                 }
 271         }
 272 }
 273
 274 void S9xInputScreenDraw(int pixelSize, void * buffer, int pitch)
 275 {
 276         switch (pixelSize)
 277         {
 278                 case 1:
 279                         drawControls(reinterpret_cast<uint8*>(buffer), pitch);
 280                         break;
 281                 case 2:
 282                         drawControls(reinterpret_cast<uint16*>(buffer), pitch / 2);
 283                         break;
 284         }
 285 }
 286