diff options
Diffstat (limited to '3rdparty/SDL2/Xcode-iOS/Demos/src/keyboard.c')
-rw-r--r-- | 3rdparty/SDL2/Xcode-iOS/Demos/src/keyboard.c | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/3rdparty/SDL2/Xcode-iOS/Demos/src/keyboard.c b/3rdparty/SDL2/Xcode-iOS/Demos/src/keyboard.c deleted file mode 100644 index 1932ad4a96b..00000000000 --- a/3rdparty/SDL2/Xcode-iOS/Demos/src/keyboard.c +++ /dev/null @@ -1,317 +0,0 @@ -/* - * keyboard.c - * written by Holmes Futrell - * use however you want - */ - -#include "SDL.h" -#include "common.h" - -#define GLYPH_SIZE_IMAGE 16 /* size of glyphs (characters) in the bitmap font file */ -#define GLYPH_SIZE_SCREEN 32 /* size of glyphs (characters) as shown on the screen */ - -static SDL_Texture *texture; /* texture where we'll hold our font */ - -/* function declarations */ -void cleanup(void); -void drawBlank(int x, int y); - -static SDL_Renderer *renderer; -static int numChars = 0; /* number of characters we've typed so far */ -static SDL_bool lastCharWasColon = 0; /* we use this to detect sequences such as :) */ -static SDL_Color bg_color = { 50, 50, 100, 255 }; /* color of background */ - -/* this structure maps a scancode to an index in our bitmap font. - it also contains data about under which modifiers the mapping is valid - (for example, we don't want shift + 1 to produce the character '1', - but rather the character '!') -*/ -typedef struct -{ - SDL_Scancode scancode; /* scancode of the key we want to map */ - int allow_no_mod; /* is the map valid if the key has no modifiers? */ - SDL_Keymod mod; /* what modifiers are allowed for the mapping */ - int index; /* what index in the font does the scancode map to */ -} fontMapping; - -#define TABLE_SIZE 51 /* size of our table which maps keys and modifiers to font indices */ - -/* Below is the table that defines the mapping between scancodes and modifiers to indices in the - bitmap font. As an example, then line '{ SDL_SCANCODE_A, 1, KMOD_SHIFT, 33 }' means, map - the key A (which has scancode SDL_SCANCODE_A) to index 33 in the font (which is a picture of an A), - The '1' means that the mapping is valid even if there are no modifiers, and KMOD_SHIFT means the - mapping is also valid if the user is holding shift. -*/ -fontMapping map[TABLE_SIZE] = { - - {SDL_SCANCODE_A, 1, KMOD_SHIFT, 33}, /* A */ - {SDL_SCANCODE_B, 1, KMOD_SHIFT, 34}, /* B */ - {SDL_SCANCODE_C, 1, KMOD_SHIFT, 35}, /* C */ - {SDL_SCANCODE_D, 1, KMOD_SHIFT, 36}, /* D */ - {SDL_SCANCODE_E, 1, KMOD_SHIFT, 37}, /* E */ - {SDL_SCANCODE_F, 1, KMOD_SHIFT, 38}, /* F */ - {SDL_SCANCODE_G, 1, KMOD_SHIFT, 39}, /* G */ - {SDL_SCANCODE_H, 1, KMOD_SHIFT, 40}, /* H */ - {SDL_SCANCODE_I, 1, KMOD_SHIFT, 41}, /* I */ - {SDL_SCANCODE_J, 1, KMOD_SHIFT, 42}, /* J */ - {SDL_SCANCODE_K, 1, KMOD_SHIFT, 43}, /* K */ - {SDL_SCANCODE_L, 1, KMOD_SHIFT, 44}, /* L */ - {SDL_SCANCODE_M, 1, KMOD_SHIFT, 45}, /* M */ - {SDL_SCANCODE_N, 1, KMOD_SHIFT, 46}, /* N */ - {SDL_SCANCODE_O, 1, KMOD_SHIFT, 47}, /* O */ - {SDL_SCANCODE_P, 1, KMOD_SHIFT, 48}, /* P */ - {SDL_SCANCODE_Q, 1, KMOD_SHIFT, 49}, /* Q */ - {SDL_SCANCODE_R, 1, KMOD_SHIFT, 50}, /* R */ - {SDL_SCANCODE_S, 1, KMOD_SHIFT, 51}, /* S */ - {SDL_SCANCODE_T, 1, KMOD_SHIFT, 52}, /* T */ - {SDL_SCANCODE_U, 1, KMOD_SHIFT, 53}, /* U */ - {SDL_SCANCODE_V, 1, KMOD_SHIFT, 54}, /* V */ - {SDL_SCANCODE_W, 1, KMOD_SHIFT, 55}, /* W */ - {SDL_SCANCODE_X, 1, KMOD_SHIFT, 56}, /* X */ - {SDL_SCANCODE_Y, 1, KMOD_SHIFT, 57}, /* Y */ - {SDL_SCANCODE_Z, 1, KMOD_SHIFT, 58}, /* Z */ - {SDL_SCANCODE_0, 1, 0, 16}, /* 0 */ - {SDL_SCANCODE_1, 1, 0, 17}, /* 1 */ - {SDL_SCANCODE_2, 1, 0, 18}, /* 2 */ - {SDL_SCANCODE_3, 1, 0, 19}, /* 3 */ - {SDL_SCANCODE_4, 1, 0, 20}, /* 4 */ - {SDL_SCANCODE_5, 1, 0, 21}, /* 5 */ - {SDL_SCANCODE_6, 1, 0, 22}, /* 6 */ - {SDL_SCANCODE_7, 1, 0, 23}, /* 7 */ - {SDL_SCANCODE_8, 1, 0, 24}, /* 8 */ - {SDL_SCANCODE_9, 1, 0, 25}, /* 9 */ - {SDL_SCANCODE_SPACE, 1, 0, 0}, /* ' ' */ - {SDL_SCANCODE_1, 0, KMOD_SHIFT, 1}, /* ! */ - {SDL_SCANCODE_SLASH, 0, KMOD_SHIFT, 31}, /* ? */ - {SDL_SCANCODE_SLASH, 1, 0, 15}, /* / */ - {SDL_SCANCODE_COMMA, 1, 0, 12}, /* , */ - {SDL_SCANCODE_SEMICOLON, 1, 0, 27}, /* ; */ - {SDL_SCANCODE_SEMICOLON, 0, KMOD_SHIFT, 26}, /* : */ - {SDL_SCANCODE_PERIOD, 1, 0, 14}, /* . */ - {SDL_SCANCODE_MINUS, 1, 0, 13}, /* - */ - {SDL_SCANCODE_EQUALS, 0, KMOD_SHIFT, 11}, /* = */ - {SDL_SCANCODE_APOSTROPHE, 1, 0, 7}, /* ' */ - {SDL_SCANCODE_APOSTROPHE, 0, KMOD_SHIFT, 2}, /* " */ - {SDL_SCANCODE_5, 0, KMOD_SHIFT, 5}, /* % */ - -}; - -/* - This function maps an SDL_KeySym to an index in the bitmap font. - It does so by scanning through the font mapping table one entry - at a time. - - If a match is found (scancode and allowed modifiers), the proper - index is returned. - - If there is no entry for the key, -1 is returned -*/ -int -keyToIndex(SDL_Keysym key) -{ - int i, index = -1; - for (i = 0; i < TABLE_SIZE; i++) { - fontMapping compare = map[i]; - if (key.scancode == compare.scancode) { - /* if this entry is valid with no key mod and we have no keymod, or if - the key's modifiers are allowed modifiers for that mapping */ - if ((compare.allow_no_mod && key.mod == 0) - || (key.mod & compare.mod)) { - index = compare.index; - break; - } - } - } - return index; -} - -/* - This function returns and x,y position for a given character number. - It is used for positioning each character of text -*/ -void -getPositionForCharNumber(int n, int *x, int *y) -{ - int renderW, renderH; - SDL_RenderGetLogicalSize(renderer, &renderW, &renderH); - - int x_padding = 16; /* padding space on left and right side of screen */ - int y_padding = 32; /* padding space at top of screen */ - /* figure out the number of characters that can fit horizontally across the screen */ - int max_x_chars = (renderW - 2 * x_padding) / GLYPH_SIZE_SCREEN; - int line_separation = 5; /* pixels between each line */ - *x = (n % max_x_chars) * GLYPH_SIZE_SCREEN + x_padding; - *y = (n / max_x_chars) * (GLYPH_SIZE_SCREEN + line_separation) + - y_padding; -} - -void -drawIndex(int index) -{ - int x, y; - getPositionForCharNumber(numChars, &x, &y); - SDL_Rect srcRect = - { GLYPH_SIZE_IMAGE * index, 0, GLYPH_SIZE_IMAGE, GLYPH_SIZE_IMAGE }; - SDL_Rect dstRect = { x, y, GLYPH_SIZE_SCREEN, GLYPH_SIZE_SCREEN }; - drawBlank(x, y); - SDL_RenderCopy(renderer, texture, &srcRect, &dstRect); -} - -/* draws the cursor icon at the current end position of the text */ -void -drawCursor(void) -{ - drawIndex(29); /* cursor is at index 29 in the bitmap font */ -} - -/* paints over a glyph sized region with the background color - in effect it erases the area -*/ -void -drawBlank(int x, int y) -{ - SDL_Rect rect = { x, y, GLYPH_SIZE_SCREEN, GLYPH_SIZE_SCREEN }; - SDL_SetRenderDrawColor(renderer, bg_color.r, bg_color.g, bg_color.b, bg_color.a); - SDL_RenderFillRect(renderer, &rect); -} - -/* moves backwards one character, erasing the last one put down */ -void -backspace(void) -{ - int x, y; - if (numChars > 0) { - getPositionForCharNumber(numChars, &x, &y); - drawBlank(x, y); - numChars--; - getPositionForCharNumber(numChars, &x, &y); - drawBlank(x, y); - drawCursor(); - } -} - -/* this function loads our font into an SDL_Texture and returns the SDL_Texture */ -SDL_Texture* -loadFont(void) -{ - - SDL_Surface *surface = SDL_LoadBMP("kromasky_16x16.bmp"); - - if (!surface) { - printf("Error loading bitmap: %s\n", SDL_GetError()); - return 0; - } else { - /* set the transparent color for the bitmap font (hot pink) */ - SDL_SetColorKey(surface, 1, SDL_MapRGB(surface->format, 238, 0, 252)); - /* now we convert the surface to our desired pixel format */ - int format = SDL_PIXELFORMAT_ABGR8888; /* desired texture format */ - Uint32 Rmask, Gmask, Bmask, Amask; /* masks for desired format */ - int bpp; /* bits per pixel for desired format */ - SDL_PixelFormatEnumToMasks(format, &bpp, &Rmask, &Gmask, &Bmask, - &Amask); - SDL_Surface *converted = - SDL_CreateRGBSurface(0, surface->w, surface->h, bpp, Rmask, Gmask, - Bmask, Amask); - SDL_BlitSurface(surface, NULL, converted, NULL); - /* create our texture */ - texture = - SDL_CreateTextureFromSurface(renderer, converted); - if (texture == 0) { - printf("texture creation failed: %s\n", SDL_GetError()); - } else { - /* set blend mode for our texture */ - SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND); - } - SDL_FreeSurface(surface); - SDL_FreeSurface(converted); - return texture; - } -} - -int -main(int argc, char *argv[]) -{ - int index; /* index of last key we pushed in the bitmap font */ - SDL_Window *window; - SDL_Event event; /* last event received */ - SDL_Keymod mod; /* key modifiers of last key we pushed */ - SDL_Scancode scancode; /* scancode of last key we pushed */ - int width; - int height; - - if (SDL_Init(SDL_INIT_VIDEO) < 0) { - printf("Error initializing SDL: %s", SDL_GetError()); - } - /* create window */ - window = SDL_CreateWindow("iPhone keyboard test", 0, 0, 320, 480, SDL_WINDOW_ALLOW_HIGHDPI); - /* create renderer */ - renderer = SDL_CreateRenderer(window, -1, 0); - - SDL_GetWindowSize(window, &width, &height); - SDL_RenderSetLogicalSize(renderer, width, height); - - /* load up our font */ - loadFont(); - - /* draw the background, we'll just paint over it */ - SDL_SetRenderDrawColor(renderer, bg_color.r, bg_color.g, bg_color.b, bg_color.a); - SDL_RenderFillRect(renderer, NULL); - SDL_RenderPresent(renderer); - - int done = 0; - /* loop till we get SDL_Quit */ - while (!done && SDL_WaitEvent(&event)) { - switch (event.type) { - case SDL_QUIT: - done = 1; - break; - case SDL_KEYDOWN: - index = keyToIndex(event.key.keysym); - scancode = event.key.keysym.scancode; - mod = event.key.keysym.mod; - if (scancode == SDL_SCANCODE_DELETE) { - /* if user hit delete, delete the last character */ - backspace(); - lastCharWasColon = 0; - } else if (lastCharWasColon && scancode == SDL_SCANCODE_0 - && (mod & KMOD_SHIFT)) { - /* if our last key was a colon and this one is a close paren, the make a hoppy face */ - backspace(); - drawIndex(32); /* index for happy face */ - numChars++; - drawCursor(); - lastCharWasColon = 0; - } else if (index != -1) { - /* if we aren't doing a happy face, then just draw the normal character */ - drawIndex(index); - numChars++; - drawCursor(); - lastCharWasColon = - (event.key.keysym.scancode == SDL_SCANCODE_SEMICOLON - && (event.key.keysym.mod & KMOD_SHIFT)); - } - /* check if the key was a colon */ - /* draw our updates to the screen */ - SDL_RenderPresent(renderer); - break; - case SDL_MOUSEBUTTONUP: - /* mouse up toggles onscreen keyboard visibility */ - if (SDL_IsTextInputActive()) { - SDL_StopTextInput(); - } else { - SDL_StartTextInput(); - } - break; - } - } - cleanup(); - return 0; -} - -/* clean up after ourselves like a good kiddy */ -void -cleanup(void) -{ - SDL_DestroyTexture(texture); - SDL_Quit(); -} |