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blender-archive/source/blender/windowmanager/intern/wm_gesture.c

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/**
* $Id:
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2008 Blender Foundation.
* All rights reserved.
*
*
* Contributor(s): Blender Foundation
*
* ***** END GPL LICENSE BLOCK *****
*/
#define _USE_MATH_DEFINES
#include <math.h>
#include "DNA_screen_types.h"
#include "DNA_vec_types.h"
#include "DNA_windowmanager_types.h"
#include "MEM_guardedalloc.h"
#include "BLI_blenlib.h"
#include "BKE_context.h"
#include "BKE_utildefines.h"
#include "WM_api.h"
#include "WM_types.h"
#include "wm.h"
#include "wm_event_system.h"
#include "wm_subwindow.h"
#include "ED_screen.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
/* context checked on having screen, window and area */
wmGesture *WM_gesture_new(bContext *C, wmEvent *event, int type)
{
wmGesture *gesture= MEM_callocN(sizeof(wmGesture), "new gesture");
wmWindow *window= CTX_wm_window(C);
bScreen *screen= CTX_wm_screen(C);
int sx, sy;
BLI_addtail(&window->gesture, gesture);
gesture->type= type;
gesture->event_type= event->type;
gesture->swinid= screen->subwinactive; /* means only in area-region context! */
wm_subwindow_getorigin(window, gesture->swinid, &sx, &sy);
if( ELEM4(type, WM_GESTURE_RECT, WM_GESTURE_CROSS_RECT, WM_GESTURE_TWEAK, WM_GESTURE_CIRCLE)) {
rcti *rect= MEM_callocN(sizeof(rcti), "gesture rect new");
gesture->customdata= rect;
rect->xmin= event->x - sx;
rect->ymin= event->y - sy;
if(type==WM_GESTURE_CIRCLE)
rect->xmax= 25; // XXX temp
else {
rect->xmax= event->x - sx;
rect->ymax= event->y - sy;
}
}
else if (type==WM_GESTURE_LASSO) {
short *lasso;
gesture->customdata= lasso= MEM_callocN(2*sizeof(short)*WM_LASSO_MAX_POINTS, "lasso points");
lasso[0] = event->x - sx;
lasso[1] = event->y - sy;
gesture->points= 1;
}
return gesture;
}
void WM_gesture_end(bContext *C, wmGesture *gesture)
{
BLI_remlink(&CTX_wm_window(C)->gesture, gesture);
MEM_freeN(gesture->customdata);
MEM_freeN(gesture);
}
/* tweak and line gestures */
#define TWEAK_THRESHOLD 10
int wm_gesture_evaluate(bContext *C, wmGesture *gesture)
{
if(gesture->type==WM_GESTURE_TWEAK) {
rcti *rect= gesture->customdata;
int dx= rect->xmax - rect->xmin;
int dy= rect->ymax - rect->ymin;
if(ABS(dx)+ABS(dy) > TWEAK_THRESHOLD) {
int theta= (int)floor(4.0f*atan2((float)dy, (float)dx)/M_PI + 0.5);
int val= EVT_GESTURE_W;
if(theta==0) val= EVT_GESTURE_E;
else if(theta==1) val= EVT_GESTURE_NE;
else if(theta==2) val= EVT_GESTURE_N;
else if(theta==3) val= EVT_GESTURE_NW;
else if(theta==-1) val= EVT_GESTURE_SE;
else if(theta==-2) val= EVT_GESTURE_S;
else if(theta==-3) val= EVT_GESTURE_SW;
#if 0
/* debug */
if(val==1) printf("tweak north\n");
if(val==2) printf("tweak north-east\n");
if(val==3) printf("tweak east\n");
if(val==4) printf("tweak south-east\n");
if(val==5) printf("tweak south\n");
if(val==6) printf("tweak south-west\n");
if(val==7) printf("tweak west\n");
if(val==8) printf("tweak north-west\n");
#endif
return val;
}
}
return 0;
}
/* ******************* gesture draw ******************* */
static void wm_gesture_draw_rect(wmWindow *win, wmGesture *gt)
{
rcti *rect= (rcti *)gt->customdata;
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glLineStipple(1, 0xCCCC);
sdrawbox(rect->xmin, rect->ymin, rect->xmax, rect->ymax);
glColor3ub(255, 255, 255);
glLineStipple(1, 0x3333);
sdrawbox(rect->xmin, rect->ymin, rect->xmax, rect->ymax);
glDisable(GL_LINE_STIPPLE);
}
static void wm_gesture_draw_line(wmWindow *win, wmGesture *gt)
{
rcti *rect= (rcti *)gt->customdata;
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glLineStipple(1, 0xAAAA);
sdrawline(rect->xmin, rect->ymin, rect->xmax, rect->ymax);
glColor3ub(255, 255, 255);
glLineStipple(1, 0x5555);
sdrawline(rect->xmin, rect->ymin, rect->xmax, rect->ymax);
glDisable(GL_LINE_STIPPLE);
}
static void wm_gesture_draw_circle(wmWindow *win, wmGesture *gt)
{
rcti *rect= (rcti *)gt->customdata;
glTranslatef((float)rect->xmin, (float)rect->ymin, 0.0f);
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glLineStipple(1, 0xAAAA);
glutil_draw_lined_arc(0.0, M_PI*2.0, rect->xmax, 40);
glColor3ub(255, 255, 255);
glLineStipple(1, 0x5555);
glutil_draw_lined_arc(0.0, M_PI*2.0, rect->xmax, 40);
glDisable(GL_LINE_STIPPLE);
glTranslatef((float)-rect->xmin, (float)-rect->ymin, 0.0f);
}
static void wm_gesture_draw_lasso(wmWindow *win, wmGesture *gt)
{
short *lasso= (short *)gt->customdata;
int i;
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glLineStipple(1, 0xAAAA);
glBegin(GL_LINE_STRIP);
for(i=0; i<gt->points; i++, lasso+=2)
glVertex2sv(lasso);
glEnd();
glColor3ub(255, 255, 255);
glLineStipple(1, 0x5555);
glBegin(GL_LINE_STRIP);
lasso= (short *)gt->customdata;
for(i=0; i<gt->points; i++, lasso+=2)
glVertex2sv(lasso);
glEnd();
glDisable(GL_LINE_STIPPLE);
}
static void wm_gesture_draw_cross(wmWindow *win, wmGesture *gt)
{
rcti *rect= (rcti *)gt->customdata;
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glLineStipple(1, 0xCCCC);
sdrawline(rect->xmin - win->sizex, rect->ymin, rect->xmin + win->sizex, rect->ymin);
sdrawline(rect->xmin, rect->ymin - win->sizey, rect->xmin, rect->ymin + win->sizey);
glColor3ub(255, 255, 255);
glLineStipple(1, 0x3333);
sdrawline(rect->xmin - win->sizex, rect->ymin, rect->xmin + win->sizex, rect->ymin);
sdrawline(rect->xmin, rect->ymin - win->sizey, rect->xmin, rect->ymin + win->sizey);
glDisable(GL_LINE_STIPPLE);
}
/* called in wm_event_system.c */
void wm_gesture_draw(wmWindow *win)
{
wmGesture *gt= (wmGesture *)win->gesture.first;
for(; gt; gt= gt->next) {
/* all in subwindow space */
wmSubWindowSet(win, gt->swinid);
if(gt->type==WM_GESTURE_RECT)
wm_gesture_draw_rect(win, gt);
else if(gt->type==WM_GESTURE_TWEAK)
wm_gesture_draw_line(win, gt);
else if(gt->type==WM_GESTURE_CIRCLE)
wm_gesture_draw_circle(win, gt);
else if(gt->type==WM_GESTURE_CROSS_RECT) {
if(gt->mode==1)
wm_gesture_draw_rect(win, gt);
else
wm_gesture_draw_cross(win, gt);
}
else if(gt->type==WM_GESTURE_LASSO)
wm_gesture_draw_lasso(win, gt);
}
}
void wm_gesture_tag_redraw(bContext *C)
{
bScreen *screen= CTX_wm_screen(C);
ARegion *ar= CTX_wm_region(C);
if(screen)
screen->do_gesture= 1;
if(ar)
ED_region_tag_redraw(ar);
}