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template project, first version

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rachelchu
2017-10-11 15:01:05 +02:00
commit 8e902224cf
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AntTweakBar/src/TwEventSDL13.c Normal file
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// ---------------------------------------------------------------------------
//
// @file TwEventSDL13.c
// @brief Helper:
// translate and re-send mouse and keyboard events
// from SDL 1.3 event loop to AntTweakBar
//
// @author Philippe Decaudin
// @license This file is part of the AntTweakBar library.
// For conditions of distribution and use, see License.txt
//
// ---------------------------------------------------------------------------
#include "MiniSDL13.h" // a subset of SDL.h needed to compile TwEventSDL.c
// note: AntTweakBar.dll does not need to link with SDL,
// it just needs some definitions for its helper functions.
#include <AntTweakBar.h>
// The way SDL handles keyboard events has changed between version 1.2
// and 1.3. It is now more difficult to translate SDL keyboard events to
// AntTweakBar events. The following code is an attempt to do so, but
// it is rather complex and not always accurate (eg, CTRL+1 is not handled).
// If someone knows a better and more robust way to do the keyboard events
// translation, please let me know.
// TwEventSDL returns zero if msg has not been handled,
// and a non-zero value if it has been handled by the AntTweakBar library.
int TW_CALL TwEventSDL13(const void *sdlEvent)
{
int handled = 0;
static int s_KeyMod = 0;
const SDL_Event *event = (const SDL_Event *)sdlEvent;
if( event==NULL )
return 0;
switch( event->type )
{
case SDL_TEXTINPUT:
if( event->text.text[0]!=0 && event->text.text[1]==0 )
{
if( s_KeyMod & TW_KMOD_CTRL && event->text.text[0]<32 )
handled = TwKeyPressed(event->text.text[0]+'a'-1, s_KeyMod);
else
{
if (s_KeyMod & KMOD_RALT)
s_KeyMod &= ~KMOD_CTRL;
handled = TwKeyPressed(event->text.text[0], s_KeyMod);
}
}
s_KeyMod = 0;
break;
case SDL_KEYDOWN:
if( event->key.keysym.sym & SDLK_SCANCODE_MASK )
{
int key = 0;
switch( event->key.keysym.sym )
{
case SDLK_UP:
key = TW_KEY_UP;
break;
case SDLK_DOWN:
key = TW_KEY_DOWN;
break;
case SDLK_RIGHT:
key = TW_KEY_RIGHT;
break;
case SDLK_LEFT:
key = TW_KEY_LEFT;
break;
case SDLK_INSERT:
key = TW_KEY_INSERT;
break;
case SDLK_HOME:
key = TW_KEY_HOME;
break;
case SDLK_END:
key = TW_KEY_END;
break;
case SDLK_PAGEUP:
key = TW_KEY_PAGE_UP;
break;
case SDLK_PAGEDOWN:
key = TW_KEY_PAGE_DOWN;
break;
default:
if( event->key.keysym.sym>=SDLK_F1 && event->key.keysym.sym<=SDLK_F12 )
key = event->key.keysym.sym + TW_KEY_F1 - SDLK_F1;
}
if( key!=0 )
handled = TwKeyPressed(key, event->key.keysym.mod);
}
else if( event->key.keysym.mod & TW_KMOD_ALT )
handled = TwKeyPressed(event->key.keysym.sym & 0xFF, event->key.keysym.mod);
else
s_KeyMod = event->key.keysym.mod;
break;
case SDL_KEYUP:
s_KeyMod = 0;
break;
case SDL_MOUSEMOTION:
handled = TwMouseMotion(event->motion.x, event->motion.y);
break;
case SDL_MOUSEBUTTONUP:
case SDL_MOUSEBUTTONDOWN:
if( event->type==SDL_MOUSEBUTTONDOWN && (event->button.button==4 || event->button.button==5) ) // mouse wheel
{
static int s_WheelPos = 0;
if( event->button.button==4 )
++s_WheelPos;
else
--s_WheelPos;
handled = TwMouseWheel(s_WheelPos);
}
else
handled = TwMouseButton((event->type==SDL_MOUSEBUTTONUP)?TW_MOUSE_RELEASED:TW_MOUSE_PRESSED, (TwMouseButtonID)event->button.button);
break;
case SDL_VIDEORESIZE:
// tell the new size to TweakBar
TwWindowSize(event->resize.w, event->resize.h);
// do not set 'handled', SDL_VIDEORESIZE may be also processed by the calling application
break;
}
return handled;
}