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Moved the SDL_ttf IME demo to showfont in the SDL_ttf project

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This commit is contained in:
Sam Lantinga 2024-10-06 00:19:25 -07:00
parent e00b1fdd67
commit 596ef1ba2e
1 changed files with 8 additions and 128 deletions
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136
test/testime.c
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@ -9,36 +9,23 @@
including commercial applications, and to alter it and redistribute it including commercial applications, and to alter it and redistribute it
freely. 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 */
/* A simple program to test the Input Method support in SDL.
*
* This uses the GNU Unifont to display non-ASCII characters, available at:
* http://unifoundry.com/unifont.html
*
* An example of IME support with TrueType fonts is available in the SDL_ttf example code:
* https://github.com/libsdl-org/SDL_ttf/blob/main/examples/editbox.h
*/
#include <SDL3/SDL.h> #include <SDL3/SDL.h>
#include <SDL3/SDL_main.h> #include <SDL3/SDL_main.h>
#include <SDL3/SDL_test_font.h> #include <SDL3/SDL_test_font.h>
#ifdef HAVE_SDL_TTF
#include "SDL_ttf.h"
#endif
#include <SDL3/SDL_test_common.h> #include <SDL3/SDL_test_common.h>
#include "testutils.h" #include "testutils.h"
#ifdef HAVE_SDL_TTF
#define DEFAULT_PTSIZE 30
#endif
#ifdef HAVE_SDL_TTF
#ifdef SDL_PLATFORM_MACOS
#define DEFAULT_FONT "/System/Library/Fonts/华文细黑.ttf"
#elif defined(SDL_PLATFORM_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-15.1.05.hex" #define DEFAULT_FONT "unifont-15.1.05.hex"
#endif
#define MAX_TEXT_LENGTH 256 #define MAX_TEXT_LENGTH 256
#define WINDOW_WIDTH 640 #define WINDOW_WIDTH 640
@ -105,9 +92,6 @@ static const struct
{ "Multiline ON", SDL_PROP_TEXTINPUT_MULTILINE_BOOLEAN, true } { "Multiline ON", SDL_PROP_TEXTINPUT_MULTILINE_BOOLEAN, true }
}; };
#ifdef HAVE_SDL_TTF
static TTF_Font *font;
#else
#define UNIFONT_MAX_CODEPOINT 0x1ffff #define UNIFONT_MAX_CODEPOINT 0x1ffff
#define UNIFONT_NUM_GLYPHS 0x20000 #define UNIFONT_NUM_GLYPHS 0x20000
#define UNIFONT_REPLACEMENT 0xFFFD #define UNIFONT_REPLACEMENT 0xFFFD
@ -433,7 +417,6 @@ static void unifont_cleanup(void)
} }
/* Unifont code end */ /* Unifont code end */
#endif
static size_t utf8_length(unsigned char c) static size_t utf8_length(unsigned char c)
{ {
@ -450,35 +433,6 @@ static size_t utf8_length(unsigned char c)
return 0; return 0;
} }
#ifdef HAVE_SDL_TTF
static 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;
}
static char *utf8_advance(char *p, size_t distance)
{
size_t i = 0;
for (; i < distance && p; ++i) {
p = utf8_next(p);
}
return p;
}
#endif
static Uint32 utf8_decode(const char *p, size_t len) static Uint32 utf8_decode(const char *p, size_t len)
{ {
Uint32 codepoint = 0; Uint32 codepoint = 0;
@ -582,9 +536,6 @@ static void DrawCandidates(WindowState *ctx, SDL_FRect *cursorRect)
continue; continue;
} }
#ifdef HAVE_SDL_TTF
/* FIXME */
#else
if (ctx->horizontal_candidates) { if (ctx->horizontal_candidates) {
const char *utext = ctx->candidates[i]; const char *utext = ctx->candidates[i];
Uint32 codepoint; Uint32 codepoint;
@ -616,7 +567,6 @@ static void DrawCandidates(WindowState *ctx, SDL_FRect *cursorRect)
} }
h += UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE; h += UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
} }
#endif
} }
/* Position the candidate window */ /* Position the candidate window */
@ -646,9 +596,6 @@ static void DrawCandidates(WindowState *ctx, SDL_FRect *cursorRect)
continue; continue;
} }
#ifdef HAVE_SDL_TTF
/* FIXME */
#else
dstRect.w = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE; dstRect.w = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
dstRect.h = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE; dstRect.h = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
@ -706,7 +653,6 @@ static void DrawCandidates(WindowState *ctx, SDL_FRect *cursorRect)
} }
dstRect.y += dstRect.h; dstRect.y += dstRect.h;
} }
#endif
} }
} }
@ -733,12 +679,7 @@ static void CleanupVideo(void)
ClearCandidates(ctx); ClearCandidates(ctx);
SDL_DestroyProperties(ctx->text_settings); SDL_DestroyProperties(ctx->text_settings);
} }
#ifdef HAVE_SDL_TTF
TTF_CloseFont(font);
TTF_Quit();
#else
unifont_cleanup(); unifont_cleanup();
#endif
} }
static void DrawSettingsButton(WindowState *ctx) static void DrawSettingsButton(WindowState *ctx)
@ -860,21 +801,6 @@ static void RedrawWindow(WindowState *ctx)
drawnTextRect.h = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE; drawnTextRect.h = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
if (text[0]) { if (text[0]) {
#ifdef HAVE_SDL_TTF
SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, text, textColor);
SDL_Texture *texture;
/* Vertically center text */
drawnTextRect.y = ctx->textRect.y + (ctx->textRect.h - textSur->h) / 2;
drawnTextRect.w = textSur->w;
drawnTextRect.h = textSur->h;
texture = SDL_CreateTextureFromSurface(renderer, textSur);
SDL_DestroySurface(textSur);
SDL_RenderTexture(renderer, texture, NULL, &drawnTextRect);
SDL_DestroyTexture(texture);
#else
char *utext = text; char *utext = text;
Uint32 codepoint; Uint32 codepoint;
size_t len; size_t len;
@ -893,7 +819,6 @@ static void RedrawWindow(WindowState *ctx)
drawnTextRect.w += advance; drawnTextRect.w += advance;
utext += len; utext += len;
} }
#endif
} }
/* The marked text rectangle is the text area that hasn't been filled by committed text */ /* The marked text rectangle is the text area that hasn't been filled by committed text */
@ -910,39 +835,6 @@ static void RedrawWindow(WindowState *ctx)
cursorRect.h = drawnTextRect.h; cursorRect.h = drawnTextRect.h;
if (ctx->markedText[0]) { if (ctx->markedText[0]) {
#ifdef HAVE_SDL_TTF
SDL_Surface *textSur;
SDL_Texture *texture;
if (ctx->cursor) {
char *p = utf8_advance(ctx->markedText, ctx->cursor);
char c = 0;
if (!p) {
p = &ctx->markedText[SDL_strlen(ctx->markedText)];
}
c = *p;
*p = 0;
TTF_SizeUTF8(font, ctx->markedText, &drawnTextRect.w, NULL);
cursorRect.x += drawnTextRect.w;
*p = c;
}
textSur = TTF_RenderUTF8_Blended(font, ctx->markedText, textColor);
/* Vertically center text */
drawnTextRect.y = ctx->textRect.y + (ctx->textRect.h - textSur->h) / 2;
drawnTextRect.w = textSur->w;
drawnTextRect.h = textSur->h;
texture = SDL_CreateTextureFromSurface(renderer, textSur);
SDL_DestroySurface(textSur);
SDL_RenderTexture(renderer, texture, NULL, &drawnTextRect);
SDL_DestroyTexture(texture);
if (ctx->cursor_length > 0) {
/* FIXME: Need to measure text extents */
cursorRect.w = ctx->cursor_length * UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
}
#else
int i = 0; int i = 0;
char *utext = ctx->markedText; char *utext = ctx->markedText;
Uint32 codepoint; Uint32 codepoint;
@ -970,7 +862,6 @@ static void RedrawWindow(WindowState *ctx)
if (ctx->cursor_length > 0) { if (ctx->cursor_length > 0) {
cursorRect.w = ctx->cursor_length * UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE; cursorRect.w = ctx->cursor_length * UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
} }
#endif
cursorRect.y = drawnTextRect.y; cursorRect.y = drawnTextRect.y;
cursorRect.h = drawnTextRect.h; cursorRect.h = drawnTextRect.h;
@ -1085,20 +976,9 @@ int main(int argc, char *argv[])
fontname = GetResourceFilename(fontname, DEFAULT_FONT); fontname = GetResourceFilename(fontname, DEFAULT_FONT);
#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", SDL_GetError());
return -1;
}
#else
if (unifont_init(fontname) < 0) { if (unifont_init(fontname) < 0) {
return -1; return -1;
} }
#endif
SDL_Log("Using font: %s\n", fontname); SDL_Log("Using font: %s\n", fontname);