| /* |
| Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely. |
| */ |
| /* A simple program to test the Input Method support in the SDL library (2.0+) |
| If you build without SDL_ttf, you can use the GNU Unifont hex file instead. |
| Download at http://unifoundry.com/unifont.html */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include "SDL.h" |
| #ifdef HAVE_SDL_TTF |
| #include "SDL_ttf.h" |
| #endif |
| |
| #include "SDL_test_common.h" |
| |
| #define DEFAULT_PTSIZE 30 |
| #ifdef HAVE_SDL_TTF |
| #ifdef __MACOSX__ |
| #define DEFAULT_FONT "/System/Library/Fonts/华文细黑.ttf" |
| #elif __WIN32__ |
| /* Some japanese font present on at least Windows 8.1. */ |
| #define DEFAULT_FONT "C:\\Windows\\Fonts\\yugothic.ttf" |
| #else |
| #define DEFAULT_FONT "NoDefaultFont.ttf" |
| #endif |
| #else |
| #define DEFAULT_FONT "unifont-9.0.02.hex" |
| #endif |
| #define MAX_TEXT_LENGTH 256 |
| |
| static SDLTest_CommonState *state; |
| static SDL_Rect textRect, markedRect; |
| static SDL_Color lineColor = {0,0,0,255}; |
| static SDL_Color backColor = {255,255,255,255}; |
| static SDL_Color textColor = {0,0,0,255}; |
| static char text[MAX_TEXT_LENGTH], markedText[SDL_TEXTEDITINGEVENT_TEXT_SIZE]; |
| static int cursor = 0; |
| #ifdef HAVE_SDL_TTF |
| static TTF_Font *font; |
| #else |
| #define UNIFONT_MAX_CODEPOINT 0x1ffff |
| #define UNIFONT_NUM_GLYPHS 0x20000 |
| /* Using 512x512 textures that are supported everywhere. */ |
| #define UNIFONT_TEXTURE_WIDTH 512 |
| #define UNIFONT_GLYPHS_IN_ROW (UNIFONT_TEXTURE_WIDTH / 16) |
| #define UNIFONT_GLYPHS_IN_TEXTURE (UNIFONT_GLYPHS_IN_ROW * UNIFONT_GLYPHS_IN_ROW) |
| #define UNIFONT_NUM_TEXTURES ((UNIFONT_NUM_GLYPHS + UNIFONT_GLYPHS_IN_TEXTURE - 1) / UNIFONT_GLYPHS_IN_TEXTURE) |
| #define UNIFONT_TEXTURE_SIZE (UNIFONT_TEXTURE_WIDTH * UNIFONT_TEXTURE_WIDTH * 4) |
| #define UNIFONT_TEXTURE_PITCH (UNIFONT_TEXTURE_WIDTH * 4) |
| #define UNIFONT_DRAW_SCALE 2 |
| struct UnifontGlyph { |
| Uint8 width; |
| Uint8 data[32]; |
| } *unifontGlyph; |
| static SDL_Texture **unifontTexture; |
| static Uint8 unifontTextureLoaded[UNIFONT_NUM_TEXTURES] = {0}; |
| |
| /* Unifont loading code start */ |
| |
| static Uint8 dehex(char c) |
| { |
| if (c >= '0' && c <= '9') |
| return c - '0'; |
| else if (c >= 'a' && c <= 'f') |
| return c - 'a' + 10; |
| else if (c >= 'A' && c <= 'F') |
| return c - 'A' + 10; |
| return 255; |
| } |
| |
| static Uint8 dehex2(char c1, char c2) |
| { |
| return (dehex(c1) << 4) | dehex(c2); |
| } |
| |
| static Uint8 validate_hex(const char *cp, size_t len, Uint32 *np) |
| { |
| Uint32 n = 0; |
| for (; len > 0; cp++, len--) |
| { |
| Uint8 c = dehex(*cp); |
| if (c == 255) |
| return 0; |
| n = (n << 4) | c; |
| } |
| if (np != NULL) |
| *np = n; |
| return 1; |
| } |
| |
| static int unifont_init(const char *fontname) |
| { |
| Uint8 hexBuffer[65]; |
| Uint32 numGlyphs = 0; |
| int lineNumber = 1; |
| size_t bytesRead; |
| SDL_RWops *hexFile; |
| const size_t unifontGlyphSize = UNIFONT_NUM_GLYPHS * sizeof(struct UnifontGlyph); |
| const size_t unifontTextureSize = UNIFONT_NUM_TEXTURES * state->num_windows * sizeof(void *); |
| |
| /* Allocate memory for the glyph data so the file can be closed after initialization. */ |
| unifontGlyph = (struct UnifontGlyph *)SDL_malloc(unifontGlyphSize); |
| if (unifontGlyph == NULL) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to allocate %d KiB for glyph data.\n", (int)(unifontGlyphSize + 1023) / 1024); |
| return -1; |
| } |
| SDL_memset(unifontGlyph, 0, unifontGlyphSize); |
| |
| /* Allocate memory for texture pointers for all renderers. */ |
| unifontTexture = (SDL_Texture **)SDL_malloc(unifontTextureSize); |
| if (unifontTexture == NULL) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to allocate %d KiB for texture pointer data.\n", (int)(unifontTextureSize + 1023) / 1024); |
| return -1; |
| } |
| SDL_memset(unifontTexture, 0, unifontTextureSize); |
| |
| hexFile = SDL_RWFromFile(fontname, "rb"); |
| if (hexFile == NULL) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to open font file: %s\n", fontname); |
| return -1; |
| } |
| |
| /* Read all the glyph data into memory to make it accessible later when textures are created. */ |
| do { |
| int i, codepointHexSize; |
| size_t bytesOverread; |
| Uint8 glyphWidth; |
| Uint32 codepoint; |
| |
| bytesRead = SDL_RWread(hexFile, hexBuffer, 1, 9); |
| if (numGlyphs > 0 && bytesRead == 0) |
| break; /* EOF */ |
| if ((numGlyphs == 0 && bytesRead == 0) || (numGlyphs > 0 && bytesRead < 9)) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Unexpected end of hex file.\n"); |
| return -1; |
| } |
| |
| /* Looking for the colon that separates the codepoint and glyph data at position 2, 4, 6 and 8. */ |
| if (hexBuffer[2] == ':') |
| codepointHexSize = 2; |
| else if (hexBuffer[4] == ':') |
| codepointHexSize = 4; |
| else if (hexBuffer[6] == ':') |
| codepointHexSize = 6; |
| else if (hexBuffer[8] == ':') |
| codepointHexSize = 8; |
| else |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Could not find codepoint and glyph data separator symbol in hex file on line %d.\n", lineNumber); |
| return -1; |
| } |
| |
| if (!validate_hex((const char *)hexBuffer, codepointHexSize, &codepoint)) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Malformed hexadecimal number in hex file on line %d.\n", lineNumber); |
| return -1; |
| } |
| if (codepoint > UNIFONT_MAX_CODEPOINT) |
| SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION, "unifont: Codepoint on line %d exceeded limit of 0x%x.\n", lineNumber, UNIFONT_MAX_CODEPOINT); |
| |
| /* If there was glyph data read in the last file read, move it to the front of the buffer. */ |
| bytesOverread = 8 - codepointHexSize; |
| if (codepointHexSize < 8) |
| SDL_memmove(hexBuffer, hexBuffer + codepointHexSize + 1, bytesOverread); |
| bytesRead = SDL_RWread(hexFile, hexBuffer + bytesOverread, 1, 33 - bytesOverread); |
| if (bytesRead < (33 - bytesOverread)) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Unexpected end of hex file.\n"); |
| return -1; |
| } |
| if (hexBuffer[32] == '\n') |
| glyphWidth = 8; |
| else |
| { |
| glyphWidth = 16; |
| bytesRead = SDL_RWread(hexFile, hexBuffer + 33, 1, 32); |
| if (bytesRead < 32) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Unexpected end of hex file.\n"); |
| return -1; |
| } |
| } |
| |
| if (!validate_hex((const char *)hexBuffer, glyphWidth * 4, NULL)) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Malformed hexadecimal glyph data in hex file on line %d.\n", lineNumber); |
| return -1; |
| } |
| |
| if (codepoint <= UNIFONT_MAX_CODEPOINT) |
| { |
| if (unifontGlyph[codepoint].width > 0) |
| SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION, "unifont: Ignoring duplicate codepoint 0x%08x in hex file on line %d.\n", codepoint, lineNumber); |
| else |
| { |
| unifontGlyph[codepoint].width = glyphWidth; |
| /* Pack the hex data into a more compact form. */ |
| for (i = 0; i < glyphWidth * 2; i++) |
| unifontGlyph[codepoint].data[i] = dehex2(hexBuffer[i * 2], hexBuffer[i * 2 + 1]); |
| numGlyphs++; |
| } |
| } |
| |
| lineNumber++; |
| } while (bytesRead > 0); |
| |
| SDL_RWclose(hexFile); |
| SDL_Log("unifont: Loaded %u glyphs.\n", numGlyphs); |
| return 0; |
| } |
| |
| static void unifont_make_rgba(Uint8 *src, Uint8 *dst, Uint8 width) |
| { |
| int i, j; |
| Uint8 *row = dst; |
| |
| for (i = 0; i < width * 2; i++) |
| { |
| Uint8 data = src[i]; |
| for (j = 0; j < 8; j++) |
| { |
| if (data & 0x80) |
| { |
| row[0] = textColor.r; |
| row[1] = textColor.g; |
| row[2] = textColor.b; |
| row[3] = textColor.a; |
| } |
| else |
| { |
| row[0] = 0; |
| row[1] = 0; |
| row[2] = 0; |
| row[3] = 0; |
| } |
| data <<= 1; |
| row += 4; |
| } |
| |
| if (width == 8 || (width == 16 && i % 2 == 1)) |
| { |
| dst += UNIFONT_TEXTURE_PITCH; |
| row = dst; |
| } |
| } |
| } |
| |
| static int unifont_load_texture(Uint32 textureID) |
| { |
| int i; |
| Uint8 * textureRGBA; |
| |
| if (textureID >= UNIFONT_NUM_TEXTURES) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Tried to load out of range texture %u.\n", textureID); |
| return -1; |
| } |
| |
| textureRGBA = (Uint8 *)SDL_malloc(UNIFONT_TEXTURE_SIZE); |
| if (textureRGBA == NULL) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to allocate %d MiB for a texture.\n", UNIFONT_TEXTURE_SIZE / 1024 / 1024); |
| return -1; |
| } |
| SDL_memset(textureRGBA, 0, UNIFONT_TEXTURE_SIZE); |
| |
| /* Copy the glyphs into memory in RGBA format. */ |
| for (i = 0; i < UNIFONT_GLYPHS_IN_TEXTURE; i++) |
| { |
| Uint32 codepoint = UNIFONT_GLYPHS_IN_TEXTURE * textureID + i; |
| if (unifontGlyph[codepoint].width > 0) |
| { |
| const Uint32 cInTex = codepoint % UNIFONT_GLYPHS_IN_TEXTURE; |
| const size_t offset = (cInTex / UNIFONT_GLYPHS_IN_ROW) * UNIFONT_TEXTURE_PITCH * 16 + (cInTex % UNIFONT_GLYPHS_IN_ROW) * 16 * 4; |
| unifont_make_rgba(unifontGlyph[codepoint].data, textureRGBA + offset, unifontGlyph[codepoint].width); |
| } |
| } |
| |
| /* Create textures and upload the RGBA data from above. */ |
| for (i = 0; i < state->num_windows; ++i) |
| { |
| SDL_Renderer *renderer = state->renderers[i]; |
| SDL_Texture *tex = unifontTexture[UNIFONT_NUM_TEXTURES * i + textureID]; |
| if (state->windows[i] == NULL || renderer == NULL || tex != NULL) |
| continue; |
| tex = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, UNIFONT_TEXTURE_WIDTH, UNIFONT_TEXTURE_WIDTH); |
| if (tex == NULL) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to create texture %u for renderer %d.\n", textureID, i); |
| return -1; |
| } |
| unifontTexture[UNIFONT_NUM_TEXTURES * i + textureID] = tex; |
| SDL_SetTextureBlendMode(tex, SDL_BLENDMODE_BLEND); |
| if (SDL_UpdateTexture(tex, NULL, textureRGBA, UNIFONT_TEXTURE_PITCH) != 0) |
| { |
| SDL_Log("unifont error: Failed to update texture %u data for renderer %d.\n", textureID, i); |
| } |
| } |
| |
| SDL_free(textureRGBA); |
| unifontTextureLoaded[textureID] = 1; |
| return 0; |
| } |
| |
| static Sint32 unifont_draw_glyph(Uint32 codepoint, int rendererID, SDL_Rect *dstrect) |
| { |
| SDL_Texture *texture; |
| const Uint32 textureID = codepoint / UNIFONT_GLYPHS_IN_TEXTURE; |
| SDL_Rect srcrect; |
| srcrect.w = srcrect.h = 16; |
| if (codepoint > UNIFONT_MAX_CODEPOINT) { |
| return 0; |
| } |
| if (!unifontTextureLoaded[textureID]) { |
| if (unifont_load_texture(textureID) < 0) { |
| return 0; |
| } |
| } |
| texture = unifontTexture[UNIFONT_NUM_TEXTURES * rendererID + textureID]; |
| if (texture != NULL) |
| { |
| const Uint32 cInTex = codepoint % UNIFONT_GLYPHS_IN_TEXTURE; |
| srcrect.x = cInTex % UNIFONT_GLYPHS_IN_ROW * 16; |
| srcrect.y = cInTex / UNIFONT_GLYPHS_IN_ROW * 16; |
| SDL_RenderCopy(state->renderers[rendererID], texture, &srcrect, dstrect); |
| } |
| return unifontGlyph[codepoint].width; |
| } |
| |
| static void unifont_cleanup() |
| { |
| int i, j; |
| for (i = 0; i < state->num_windows; ++i) |
| { |
| SDL_Renderer *renderer = state->renderers[i]; |
| if (state->windows[i] == NULL || renderer == NULL) |
| continue; |
| for (j = 0; j < UNIFONT_NUM_TEXTURES; j++) |
| { |
| SDL_Texture *tex = unifontTexture[UNIFONT_NUM_TEXTURES * i + j]; |
| if (tex != NULL) |
| SDL_DestroyTexture(tex); |
| } |
| } |
| |
| for (j = 0; j < UNIFONT_NUM_TEXTURES; j++) |
| unifontTextureLoaded[j] = 0; |
| |
| SDL_free(unifontTexture); |
| SDL_free(unifontGlyph); |
| } |
| |
| /* Unifont code end */ |
| #endif |
| |
| size_t utf8_length(unsigned char c) |
| { |
| c = (unsigned char)(0xff & c); |
| if (c < 0x80) |
| return 1; |
| else if ((c >> 5) ==0x6) |
| return 2; |
| else if ((c >> 4) == 0xe) |
| return 3; |
| else if ((c >> 3) == 0x1e) |
| return 4; |
| else |
| return 0; |
| } |
| |
| char *utf8_next(char *p) |
| { |
| size_t len = utf8_length(*p); |
| size_t i = 0; |
| if (!len) |
| return 0; |
| |
| for (; i < len; ++i) |
| { |
| ++p; |
| if (!*p) |
| return 0; |
| } |
| return p; |
| } |
| |
| char *utf8_advance(char *p, size_t distance) |
| { |
| size_t i = 0; |
| for (; i < distance && p; ++i) |
| { |
| p = utf8_next(p); |
| } |
| return p; |
| } |
| |
| Uint32 utf8_decode(char *p, size_t len) |
| { |
| Uint32 codepoint = 0; |
| size_t i = 0; |
| if (!len) |
| return 0; |
| |
| for (; i < len; ++i) |
| { |
| if (i == 0) |
| codepoint = (0xff >> len) & *p; |
| else |
| { |
| codepoint <<= 6; |
| codepoint |= 0x3f & *p; |
| } |
| if (!*p) |
| return 0; |
| p++; |
| } |
| |
| return codepoint; |
| } |
| |
| void usage() |
| { |
| SDL_Log("usage: testime [--font fontfile]\n"); |
| } |
| |
| void InitInput() |
| { |
| /* Prepare a rect for text input */ |
| textRect.x = textRect.y = 100; |
| textRect.w = DEFAULT_WINDOW_WIDTH - 2 * textRect.x; |
| textRect.h = 50; |
| |
| text[0] = 0; |
| markedRect = textRect; |
| markedText[0] = 0; |
| |
| SDL_StartTextInput(); |
| } |
| |
| void CleanupVideo() |
| { |
| SDL_StopTextInput(); |
| #ifdef HAVE_SDL_TTF |
| TTF_CloseFont(font); |
| TTF_Quit(); |
| #else |
| unifont_cleanup(); |
| #endif |
| } |
| |
| void _Redraw(int rendererID) |
| { |
| SDL_Renderer * renderer = state->renderers[rendererID]; |
| SDL_Rect drawnTextRect, cursorRect, underlineRect; |
| drawnTextRect = textRect; |
| drawnTextRect.w = 0; |
| |
| SDL_SetRenderDrawColor(renderer, backColor.r, backColor.g, backColor.b, backColor.a); |
| SDL_RenderFillRect(renderer,&textRect); |
| |
| if (*text) |
| { |
| #ifdef HAVE_SDL_TTF |
| SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, text, textColor); |
| SDL_Texture *texture; |
| |
| /* Vertically center text */ |
| drawnTextRect.y = textRect.y + (textRect.h - textSur->h) / 2; |
| drawnTextRect.w = textSur->w; |
| drawnTextRect.h = textSur->h; |
| |
| texture = SDL_CreateTextureFromSurface(renderer,textSur); |
| SDL_FreeSurface(textSur); |
| |
| SDL_RenderCopy(renderer,texture,NULL,&drawnTextRect); |
| SDL_DestroyTexture(texture); |
| #else |
| char *utext = text; |
| Uint32 codepoint; |
| size_t len; |
| SDL_Rect dstrect; |
| |
| dstrect.x = textRect.x; |
| dstrect.y = textRect.y + (textRect.h - 16 * UNIFONT_DRAW_SCALE) / 2; |
| dstrect.w = 16 * UNIFONT_DRAW_SCALE; |
| dstrect.h = 16 * UNIFONT_DRAW_SCALE; |
| drawnTextRect.y = dstrect.y; |
| drawnTextRect.h = dstrect.h; |
| |
| while ((codepoint = utf8_decode(utext, len = utf8_length(*utext)))) |
| { |
| Sint32 advance = unifont_draw_glyph(codepoint, rendererID, &dstrect) * UNIFONT_DRAW_SCALE; |
| dstrect.x += advance; |
| drawnTextRect.w += advance; |
| utext += len; |
| } |
| #endif |
| } |
| |
| markedRect.x = textRect.x + drawnTextRect.w; |
| markedRect.w = textRect.w - drawnTextRect.w; |
| if (markedRect.w < 0) |
| { |
| /* Stop text input because we cannot hold any more characters */ |
| SDL_StopTextInput(); |
| return; |
| } |
| else |
| { |
| SDL_StartTextInput(); |
| } |
| |
| cursorRect = drawnTextRect; |
| cursorRect.x += cursorRect.w; |
| cursorRect.w = 2; |
| cursorRect.h = drawnTextRect.h; |
| |
| drawnTextRect.x += drawnTextRect.w; |
| drawnTextRect.w = 0; |
| |
| SDL_SetRenderDrawColor(renderer, backColor.r, backColor.g, backColor.b, backColor.a); |
| SDL_RenderFillRect(renderer,&markedRect); |
| |
| if (markedText[0]) |
| { |
| #ifdef HAVE_SDL_TTF |
| SDL_Surface *textSur; |
| SDL_Texture *texture; |
| if (cursor) |
| { |
| char *p = utf8_advance(markedText, cursor); |
| char c = 0; |
| if (!p) |
| p = &markedText[SDL_strlen(markedText)]; |
| |
| c = *p; |
| *p = 0; |
| TTF_SizeUTF8(font, markedText, &drawnTextRect.w, NULL); |
| cursorRect.x += drawnTextRect.w; |
| *p = c; |
| } |
| textSur = TTF_RenderUTF8_Blended(font, markedText, textColor); |
| /* Vertically center text */ |
| drawnTextRect.y = textRect.y + (textRect.h - textSur->h) / 2; |
| drawnTextRect.w = textSur->w; |
| drawnTextRect.h = textSur->h; |
| |
| texture = SDL_CreateTextureFromSurface(renderer,textSur); |
| SDL_FreeSurface(textSur); |
| |
| SDL_RenderCopy(renderer,texture,NULL,&drawnTextRect); |
| SDL_DestroyTexture(texture); |
| #else |
| int i = 0; |
| char *utext = markedText; |
| Uint32 codepoint; |
| size_t len; |
| SDL_Rect dstrect; |
| |
| dstrect.x = drawnTextRect.x; |
| dstrect.y = textRect.y + (textRect.h - 16 * UNIFONT_DRAW_SCALE) / 2; |
| dstrect.w = 16 * UNIFONT_DRAW_SCALE; |
| dstrect.h = 16 * UNIFONT_DRAW_SCALE; |
| drawnTextRect.y = dstrect.y; |
| drawnTextRect.h = dstrect.h; |
| |
| while ((codepoint = utf8_decode(utext, len = utf8_length(*utext)))) |
| { |
| Sint32 advance = unifont_draw_glyph(codepoint, rendererID, &dstrect) * UNIFONT_DRAW_SCALE; |
| dstrect.x += advance; |
| drawnTextRect.w += advance; |
| if (i < cursor) |
| cursorRect.x += advance; |
| i++; |
| utext += len; |
| } |
| #endif |
| |
| if (cursor > 0) |
| { |
| cursorRect.y = drawnTextRect.y; |
| cursorRect.h = drawnTextRect.h; |
| } |
| |
| underlineRect = markedRect; |
| underlineRect.y = drawnTextRect.y + drawnTextRect.h - 2; |
| underlineRect.h = 2; |
| underlineRect.w = drawnTextRect.w; |
| |
| SDL_SetRenderDrawColor(renderer, lineColor.r, lineColor.g, lineColor.b, lineColor.a); |
| SDL_RenderFillRect(renderer, &underlineRect); |
| } |
| |
| SDL_SetRenderDrawColor(renderer, lineColor.r, lineColor.g, lineColor.b, lineColor.a); |
| SDL_RenderFillRect(renderer,&cursorRect); |
| |
| SDL_SetTextInputRect(&markedRect); |
| } |
| |
| void Redraw() |
| { |
| int i; |
| for (i = 0; i < state->num_windows; ++i) { |
| SDL_Renderer *renderer = state->renderers[i]; |
| if (state->windows[i] == NULL) |
| continue; |
| SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0); |
| SDL_RenderClear(renderer); |
| |
| /* Sending in the window id to let the font renderers know which one we're working with. */ |
| _Redraw(i); |
| |
| SDL_RenderPresent(renderer); |
| } |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int i, done; |
| SDL_Event event; |
| const char *fontname = DEFAULT_FONT; |
| |
| /* Enable standard application logging */ |
| SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO); |
| |
| /* Initialize test framework */ |
| state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO); |
| if (!state) { |
| return 1; |
| } |
| for (i = 1; i < argc;i++) { |
| SDLTest_CommonArg(state, i); |
| } |
| for (argc--, argv++; argc > 0; argc--, argv++) |
| { |
| if (strcmp(argv[0], "--help") == 0) { |
| usage(); |
| return 0; |
| } |
| |
| else if (strcmp(argv[0], "--font") == 0) |
| { |
| argc--; |
| argv++; |
| |
| if (argc > 0) |
| fontname = argv[0]; |
| else { |
| usage(); |
| return 0; |
| } |
| } |
| } |
| |
| if (!SDLTest_CommonInit(state)) { |
| return 2; |
| } |
| |
| |
| #ifdef HAVE_SDL_TTF |
| /* Initialize fonts */ |
| TTF_Init(); |
| |
| font = TTF_OpenFont(fontname, DEFAULT_PTSIZE); |
| if (! font) |
| { |
| SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to find font: %s\n", TTF_GetError()); |
| return -1; |
| } |
| #else |
| if (unifont_init(fontname) < 0) { |
| return -1; |
| } |
| #endif |
| |
| SDL_Log("Using font: %s\n", fontname); |
| |
| InitInput(); |
| /* Create the windows and initialize the renderers */ |
| for (i = 0; i < state->num_windows; ++i) { |
| SDL_Renderer *renderer = state->renderers[i]; |
| SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE); |
| SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF); |
| SDL_RenderClear(renderer); |
| } |
| Redraw(); |
| /* Main render loop */ |
| done = 0; |
| while (!done) { |
| /* Check for events */ |
| while (SDL_PollEvent(&event)) { |
| SDLTest_CommonEvent(state, &event, &done); |
| switch(event.type) { |
| case SDL_KEYDOWN: { |
| switch (event.key.keysym.sym) |
| { |
| case SDLK_RETURN: |
| text[0]=0x00; |
| Redraw(); |
| break; |
| case SDLK_BACKSPACE: |
| /* Only delete text if not in editing mode. */ |
| if (!markedText[0]) |
| { |
| size_t textlen = SDL_strlen(text); |
| |
| do { |
| if (textlen==0) |
| { |
| break; |
| } |
| if ((text[textlen-1] & 0x80) == 0x00) |
| { |
| /* One byte */ |
| text[textlen-1]=0x00; |
| break; |
| } |
| if ((text[textlen-1] & 0xC0) == 0x80) |
| { |
| /* Byte from the multibyte sequence */ |
| text[textlen-1]=0x00; |
| textlen--; |
| } |
| if ((text[textlen-1] & 0xC0) == 0xC0) |
| { |
| /* First byte of multibyte sequence */ |
| text[textlen-1]=0x00; |
| break; |
| } |
| } while(1); |
| |
| Redraw(); |
| } |
| break; |
| } |
| |
| if (done) |
| { |
| break; |
| } |
| |
| SDL_Log("Keyboard: scancode 0x%08X = %s, keycode 0x%08X = %s\n", |
| event.key.keysym.scancode, |
| SDL_GetScancodeName(event.key.keysym.scancode), |
| event.key.keysym.sym, SDL_GetKeyName(event.key.keysym.sym)); |
| break; |
| |
| case SDL_TEXTINPUT: |
| if (event.text.text[0] == '\0' || event.text.text[0] == '\n' || |
| markedRect.w < 0) |
| break; |
| |
| SDL_Log("Keyboard: text input \"%s\"\n", event.text.text); |
| |
| if (SDL_strlen(text) + SDL_strlen(event.text.text) < sizeof(text)) |
| SDL_strlcat(text, event.text.text, sizeof(text)); |
| |
| SDL_Log("text inputed: %s\n", text); |
| |
| /* After text inputed, we can clear up markedText because it */ |
| /* is committed */ |
| markedText[0] = 0; |
| Redraw(); |
| break; |
| |
| case SDL_TEXTEDITING: |
| SDL_Log("text editing \"%s\", selected range (%d, %d)\n", |
| event.edit.text, event.edit.start, event.edit.length); |
| |
| SDL_strlcpy(markedText, event.edit.text, SDL_TEXTEDITINGEVENT_TEXT_SIZE); |
| cursor = event.edit.start; |
| Redraw(); |
| break; |
| } |
| break; |
| |
| } |
| } |
| } |
| CleanupVideo(); |
| SDLTest_CommonQuit(state); |
| return 0; |
| } |
| |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
