testime.c
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/*
Copyright (C) 1997-2016 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+) */
#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
#define DEFAULT_FONT "/System/Library/Fonts/华文细黑.ttf"
#define MAX_TEXT_LENGTH 256
static SDLTest_CommonState *state;
static SDL_Rect textRect, markedRect;
static SDL_Color lineColor = {0,0,0,0};
static SDL_Color backColor = {255,255,255,0};
static SDL_Color textColor = {0,0,0,0};
static char text[MAX_TEXT_LENGTH], markedText[SDL_TEXTEDITINGEVENT_TEXT_SIZE];
static int cursor = 0;
#ifdef HAVE_SDL_TTF
static TTF_Font *font;
#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;
}
void usage()
{
SDL_Log("usage: testime [--font fontfile]\n");
exit(0);
}
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();
#endif
}
void _Redraw(SDL_Renderer * renderer) {
int w = 0, h = textRect.h;
SDL_Rect cursorRect, underlineRect;
SDL_SetRenderDrawColor(renderer, 255,255,255,255);
SDL_RenderFillRect(renderer,&textRect);
#ifdef HAVE_SDL_TTF
if (*text)
{
SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, text, textColor);
SDL_Rect dest = {textRect.x, textRect.y, textSur->w, textSur->h };
SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer,textSur);
SDL_FreeSurface(textSur);
SDL_RenderCopy(renderer,texture,NULL,&dest);
SDL_DestroyTexture(texture);
TTF_SizeUTF8(font, text, &w, &h);
}
#endif
markedRect.x = textRect.x + w;
markedRect.w = textRect.w - w;
if (markedRect.w < 0)
{
/* Stop text input because we cannot hold any more characters */
SDL_StopTextInput();
return;
}
else
{
SDL_StartTextInput();
}
cursorRect = markedRect;
cursorRect.w = 2;
cursorRect.h = h;
SDL_SetRenderDrawColor(renderer, 255,255,255,255);
SDL_RenderFillRect(renderer,&markedRect);
if (markedText[0])
{
#ifdef HAVE_SDL_TTF
if (cursor)
{
char *p = utf8_advance(markedText, cursor);
char c = 0;
if (!p)
p = &markedText[strlen(markedText)];
c = *p;
*p = 0;
TTF_SizeUTF8(font, markedText, &w, 0);
cursorRect.x += w;
*p = c;
}
SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, markedText, textColor);
SDL_Rect dest = {markedRect.x, markedRect.y, textSur->w, textSur->h };
TTF_SizeUTF8(font, markedText, &w, &h);
SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer,textSur);
SDL_FreeSurface(textSur);
SDL_RenderCopy(renderer,texture,NULL,&dest);
SDL_DestroyTexture(texture);
#endif
underlineRect = markedRect;
underlineRect.y += (h - 2);
underlineRect.h = 2;
underlineRect.w = w;
SDL_SetRenderDrawColor(renderer, 0,0,0,0);
SDL_RenderFillRect(renderer,&markedRect);
}
SDL_SetRenderDrawColor(renderer, 0,0,0,0);
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);
_Redraw(renderer);
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());
exit(-1);
}
#endif
SDL_Log("Using font: %s\n", fontname);
atexit(SDL_Quit);
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:
{
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);
strcpy(markedText, event.edit.text);
cursor = event.edit.start;
Redraw();
break;
}
break;
}
}
}
CleanupVideo();
SDLTest_CommonQuit(state);
return 0;
}
/* vi: set ts=4 sw=4 expandtab: */
CleanupVideo
void CleanupVideo()
Definition: testime.c:102
SDL_TextEditingEvent::start
Sint32 start
Definition: SDL_events.h:209
SDL_PollEvent
#define SDL_PollEvent
Definition: SDL_dynapi_overrides.h:128
SDL_KEYDOWN
Definition: SDL_events.h:93
SDL_Color
Definition: SDL_pixels.h:279
backColor
static SDL_Color backColor
Definition: testime.c:32
SDLK_BACKSPACE
Definition: SDL_keycode.h:53
SDL_strlcat
#define SDL_strlcat
Definition: SDL_dynapi_overrides.h:402
SDL_Surface::h
int h
Definition: SDL_surface.h:73
SDL_BLENDMODE_NONE
Definition: SDL_blendmode.h:42
SDLTest_CommonCreateState
SDLTest_CommonState * SDLTest_CommonCreateState(char **argv, Uint32 flags)
Parse command line parameters and create common state.
Definition: SDL_test_common.c:36
SDL_RenderFillRect
#define SDL_RenderFillRect
Definition: SDL_dynapi_overrides.h:347
texture
GLenum GLenum GLuint texture
Definition: SDL_opengl_glext.h:1178
p
GLfloat GLfloat p
Definition: SDL_opengl_glext.h:11090
utf8_next
char * utf8_next(char *p)
Definition: testime.c:55
SDLTest_CommonArg
int SDLTest_CommonArg(SDLTest_CommonState *state, int index)
Process one common argument.
Definition: SDL_test_common.c:83
SDL_Surface
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
SDL_SetRenderDrawBlendMode
#define SDL_SetRenderDrawBlendMode
Definition: SDL_dynapi_overrides.h:338
SDL_Renderer
Definition: SDL_sysrender.h:76
SDL_Keysym::scancode
SDL_Scancode scancode
Definition: SDL_keyboard.h:49
SDL_Surface::w
int w
Definition: SDL_surface.h:73
SDL_test_common.h
SDLTest_CommonInit
SDL_bool SDLTest_CommonInit(SDLTest_CommonState *state)
Open test window.
Definition: SDL_test_common.c:645
SDL_TextEditingEvent::length
Sint32 length
Definition: SDL_events.h:210
SDLK_RETURN
Definition: SDL_keycode.h:51
MAX_TEXT_LENGTH
#define MAX_TEXT_LENGTH
Definition: testime.c:27
len
GLenum GLsizei len
Definition: SDL_opengl_glext.h:2926
lineColor
static SDL_Color lineColor
Definition: testime.c:31
distance
GLsizei GLsizei GLfloat distance
Definition: SDL_opengl_glext.h:9200
SDL_Texture
Definition: SDL_sysrender.h:49
SDLTest_CommonState::windows
SDL_Window ** windows
Definition: SDL_test_common.h:78
cursor
static int cursor
Definition: testime.c:35
SDL_LogError
#define SDL_LogError
Definition: SDL_dynapi_overrides.h:42
SDLTest_CommonState::num_windows
int num_windows
Definition: SDL_test_common.h:77
SDL_RenderCopy
#define SDL_RenderCopy
Definition: SDL_dynapi_overrides.h:349
renderer
SDL_Renderer * renderer
Definition: testautomation_render.c:27
SDL_Log
#define SDL_Log
Definition: SDL_dynapi_overrides.h:37
utf8_advance
char * utf8_advance(char *p, size_t distance)
Definition: testime.c:71
SDL_Event::text
SDL_TextInputEvent text
Definition: SDL_events.h:528
SDL_StopTextInput
#define SDL_StopTextInput
Definition: SDL_dynapi_overrides.h:234
SDL_TextInputEvent::text
char text[SDL_TEXTINPUTEVENT_TEXT_SIZE]
Definition: SDL_events.h:223
SDL_CreateTextureFromSurface
#define SDL_CreateTextureFromSurface
Definition: SDL_dynapi_overrides.h:313
SDLTest_CommonEvent
void SDLTest_CommonEvent(SDLTest_CommonState *state, SDL_Event *event, int *done)
Common event handler for test windows.
Definition: SDL_test_common.c:1295
InitInput
void InitInput()
Definition: testime.c:87
SDL_FreeSurface
#define SDL_FreeSurface
Definition: SDL_dynapi_overrides.h:450
event
struct _cl_event * event
Definition: SDL_opengl_glext.h:2649
SDL_Quit
#define SDL_Quit
Definition: SDL_dynapi_overrides.h:64
done
int done
Definition: checkkeys.c:28
c
const GLubyte * c
Definition: SDL_opengl_glext.h:11093
SDL_TextEditingEvent::text
char text[SDL_TEXTEDITINGEVENT_TEXT_SIZE]
Definition: SDL_events.h:208
main
int main(int argc, char *argv[])
Definition: testime.c:210
Redraw
void Redraw()
Definition: testime.c:195
SDL_LOG_PRIORITY_INFO
Definition: SDL_log.h:106
state
static SDLTest_CommonState * state
Definition: testime.c:29
SDL_Rect::x
int x
Definition: SDL_rect.h:66
SDL_KeyboardEvent::keysym
SDL_Keysym keysym
Definition: SDL_events.h:196
SDL_Rect::w
int w
Definition: SDL_rect.h:67
SDL_StartTextInput
#define SDL_StartTextInput
Definition: SDL_dynapi_overrides.h:232
SDLTest_CommonState
Definition: SDL_test_common.h:51
SDLTest_CommonState::renderers
SDL_Renderer ** renderers
Definition: SDL_test_common.h:84
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:42
SDL_LogSetPriority
#define SDL_LogSetPriority
Definition: SDL_dynapi_overrides.h:242
NULL
#define NULL
Definition: begin_code.h:143
SDL_Event::edit
SDL_TextEditingEvent edit
Definition: SDL_events.h:527
text
static char text[MAX_TEXT_LENGTH]
Definition: testime.c:34
SDL_RenderClear
#define SDL_RenderClear
Definition: SDL_dynapi_overrides.h:340
SDL_GetScancodeName
#define SDL_GetScancodeName
Definition: SDL_dynapi_overrides.h:228
SDL_SetTextInputRect
#define SDL_SetTextInputRect
Definition: SDL_dynapi_overrides.h:235
SDL_TEXTINPUT
Definition: SDL_events.h:96
markedText
static char markedText[SDL_TEXTEDITINGEVENT_TEXT_SIZE]
Definition: testime.c:34
SDL_Event::key
SDL_KeyboardEvent key
Definition: SDL_events.h:526
SDL_DestroyTexture
#define SDL_DestroyTexture
Definition: SDL_dynapi_overrides.h:353
SDL_strlen
#define SDL_strlen
Definition: SDL_dynapi_overrides.h:399
SDL_Rect::h
int h
Definition: SDL_rect.h:67
textRect
static SDL_Rect textRect
Definition: testime.c:30
SDL_GetKeyName
#define SDL_GetKeyName
Definition: SDL_dynapi_overrides.h:230
SDL_Keysym::sym
SDL_Keycode sym
Definition: SDL_keyboard.h:50
DEFAULT_FONT
#define DEFAULT_FONT
Definition: testime.c:26
utf8_length
size_t utf8_length(unsigned char c)
Definition: testime.c:40
SDL_Event
General event structure.
Definition: SDL_events.h:521
SDL_SetRenderDrawColor
#define SDL_SetRenderDrawColor
Definition: SDL_dynapi_overrides.h:336
w
GLubyte GLubyte GLubyte GLubyte w
Definition: SDL_opengl_glext.h:731
usage
void usage()
Definition: testime.c:81
_Redraw
void _Redraw(SDL_Renderer *renderer)
Definition: testime.c:112
SDL.h
DEFAULT_PTSIZE
#define DEFAULT_PTSIZE
Definition: testime.c:25
SDL_LOG_CATEGORY_APPLICATION
Definition: SDL_log.h:66
DEFAULT_WINDOW_WIDTH
#define DEFAULT_WINDOW_WIDTH
Definition: SDL_test_common.h:41
SDL_Rect::y
int y
Definition: SDL_rect.h:66
markedRect
static SDL_Rect markedRect
Definition: testime.c:30
SDLTest_CommonQuit
void SDLTest_CommonQuit(SDLTest_CommonState *state)
Close test window.
Definition: SDL_test_common.c:1560
h
GLfloat GLfloat GLfloat GLfloat h
Definition: SDL_opengl_glext.h:1946
textColor
static SDL_Color textColor
Definition: testime.c:33
SDL_TEXTEDITING
Definition: SDL_events.h:95
SDL_INIT_VIDEO
#define SDL_INIT_VIDEO
Definition: SDL.h:77
SDL_Rect
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:64
SDL_RenderPresent
#define SDL_RenderPresent
Definition: SDL_dynapi_overrides.h:352
SDL_Event::type
Uint32 type
Definition: SDL_events.h:523
SDL_TEXTEDITINGEVENT_TEXT_SIZE
#define SDL_TEXTEDITINGEVENT_TEXT_SIZE
Definition: SDL_events.h:199