This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
testime.c
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/* A simple program to test the Input Method support in the SDL library (1.3+) */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "SDL.h"
#include <SDL/SDL_ttf.h>
#define DEFAULT_PTSIZE 30
#define DEFAULT_FONT "DroidSansFallback.ttf"
#define MAX_TEXT_LENGTH 256
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SDL_Surface *screen;
TTF_Font *font;
SDL_Rect textRect, markedRect;
Uint32 lineColor, backColor;
SDL_Color textColor = { 0, 0, 0 };
char text[MAX_TEXT_LENGTH], *markedText;
void InitVideo(int argc, char *argv[])
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int width = 500, height = 250;
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SDL_putenv("SDL_VIDEO_WINDOW_POS=center");
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError());
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exit(-1);
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}
/* Initialize fonts */
TTF_Init();
font = TTF_OpenFont(DEFAULT_FONT, DEFAULT_PTSIZE);
if (! font)
{
fprintf(stderr, "Failed to find font: %s\n", SDL_GetError());
exit(-1);
}
atexit(SDL_Quit);
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int flags = SDL_HWSURFACE;
if (argc > 1 && strcmp(argv[1], "--fullscreen") == 0)
{
SDL_DisplayMode mode;
SDL_GetDesktopDisplayMode(&mode);
width = mode.w;
height = mode.h;
fprintf(stderr, "%dx%d\n", width, height);
flags |= SDL_FULLSCREEN;
}
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/* Create window */
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screen = SDL_SetVideoMode(width, height, 32, flags);
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if (screen == NULL)
{
fprintf(stderr, "Unable to set %dx%d video: %s\n",
width, height, SDL_GetError());
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exit(-1);
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}
void CleanupVideo()
{
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SDL_StopTextInput();
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TTF_CloseFont(font);
TTF_Quit();
}
void InitInput()
{
backColor = SDL_MapRGB(screen->format, 0xFF, 0xFF, 0xFF);
lineColor = SDL_MapRGB(screen->format, 0x0, 0x0, 0x0);
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/* Prepare a rect for text input */
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textRect.x = textRect.y = 100;
textRect.w = screen->w - 2 * textRect.x;
textRect.h = 50;
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text[0] = 0;
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markedRect = textRect;
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markedText = NULL;
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SDL_StartTextInput();
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}
static void RenderText(SDL_Surface *sur,
TTF_Font *font,
const char *text,
int x, int y,
SDL_Color color)
{
SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, text, color);
SDL_Rect dest = { x, y, textSur->w, textSur->h };
SDL_BlitSurface(textSur, NULL, sur, &dest);
SDL_FreeSurface(textSur);
}
void Redraw()
{
int w = 0, h = textRect.h;
SDL_Rect cursorRect, underlineRect;
SDL_FillRect(screen, &textRect, backColor);
if (strlen(text))
{
RenderText(screen, font, text, textRect.x, textRect.y, textColor);
TTF_SizeUTF8(font, text, &w, &h);
}
markedRect.x = textRect.x + w;
markedRect.w = textRect.w - w;
if (markedRect.w < 0)
{
SDL_Flip(screen);
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// Stop text input because we cannot hold any more characters
SDL_StopTextInput();
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return;
}
SDL_FillRect(screen, &markedRect, backColor);
if (markedText)
{
RenderText(screen, font, markedText, markedRect.x, markedRect.y, textColor);
TTF_SizeUTF8(font, markedText, &w, &h);
underlineRect = markedRect;
underlineRect.y += (h - 2);
underlineRect.h = 2;
underlineRect.w = w;
SDL_FillRect(screen, &underlineRect, lineColor);
}
cursorRect = markedRect;
cursorRect.w = 2;
cursorRect.h = h;
SDL_FillRect(screen, &cursorRect, lineColor);
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SDL_Flip(screen);
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SDL_SetTextInputRect(&markedRect);
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}
void
HotKey_ToggleFullScreen(void)
{
SDL_Surface *screen;
screen = SDL_GetVideoSurface();
if (SDL_WM_ToggleFullScreen(screen)) {
printf("Toggled fullscreen mode - now %s\n",
(screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
} else {
printf("Unable to toggle fullscreen mode\n");
}
}
int main(int argc, char *argv[])
{
InitVideo(argc, argv);
InitInput();
Redraw();
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SDL_Event event;
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int done = 0;
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while (! done && SDL_WaitEvent(&event))
{
switch (event.type)
{
case SDL_KEYDOWN:
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if (event.key.keysym.sym == SDLK_ESCAPE) {
done = 1;
break;
}
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fprintf(stderr,
"Keyboard %d: scancode 0x%08X = %s, keycode 0x%08X = %s\n",
event.key.which, event.key.keysym.scancode,
SDL_GetScancodeName(event.key.keysym.scancode),
event.key.keysym.sym, SDL_GetKeyName(event.key.keysym.sym));
break;
case SDL_TEXTINPUT:
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if (strlen(event.text.text) == 0 || event.text.text[0] == '\n' ||
markedRect.w < 0)
break;
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fprintf(stderr, "Keyboard %d: text input \"%s\"\n",
event.text.which, event.text.text);
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if (strlen(text) + strlen(event.text.text) < sizeof(text))
strcpy(text + strlen(text), event.text.text);
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fprintf(stderr, "text inputed: %s\n", text);
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// After text inputed, we can clear up markedText because it
// is committed
markedText = NULL;
Redraw();
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break;
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case SDL_TEXTEDITING:
fprintf(stderr, "text editing \"%s\", selected range (%d, %d)\n",
event.edit.text, event.edit.start, event.edit.length);
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markedText = event.edit.text;
Redraw();
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case SDL_QUIT:
done = 1;
break;
default:
break;
}
}
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CleanupVideo();
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return 0;
}