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Small tweaks to gesture drawing to show the filled selectable area.

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Gives nice feedback for what will be selected, especially with lasso.
This commit is contained in:
Matt Ebb
2010-01-06 04:52:13 +00:00
parent 169626fa92
commit 0c64d6d71e
1 changed files with 71 additions and 5 deletions
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76
source/blender/windowmanager/intern/wm_gesture.c
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@@ -149,8 +149,18 @@ static void wm_gesture_draw_rect(wmWindow *win, wmGesture *gt)
{
rcti *rect= (rcti *)gt->customdata;
glEnable(GL_BLEND);
glColor4f(1.0, 1.0, 1.0, 0.05);
glBegin(GL_QUADS);
glVertex2s(rect->xmax, rect->ymin);
glVertex2s(rect->xmax, rect->ymax);
glVertex2s(rect->xmin, rect->ymax);
glVertex2s(rect->xmin, rect->ymin);
glEnd();
glDisable(GL_BLEND);
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glColor3ub(96, 96, 96);
glLineStipple(1, 0xCCCC);
sdrawbox(rect->xmin, rect->ymin, rect->xmax, rect->ymax);
glColor3ub(255, 255, 255);
@@ -164,7 +174,7 @@ static void wm_gesture_draw_line(wmWindow *win, wmGesture *gt)
rcti *rect= (rcti *)gt->customdata;
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glColor3ub(96, 96, 96);
glLineStipple(1, 0xAAAA);
sdrawline(rect->xmin, rect->ymin, rect->xmax, rect->ymax);
glColor3ub(255, 255, 255);
@@ -181,8 +191,13 @@ static void wm_gesture_draw_circle(wmWindow *win, wmGesture *gt)
glTranslatef((float)rect->xmin, (float)rect->ymin, 0.0f);
glEnable(GL_BLEND);
glColor4f(1.0, 1.0, 1.0, 0.05);
glutil_draw_filled_arc(0.0, M_PI*2.0, rect->xmax, 40);
glDisable(GL_BLEND);
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glColor3ub(96, 96, 96);
glLineStipple(1, 0xAAAA);
glutil_draw_lined_arc(0.0, M_PI*2.0, rect->xmax, 40);
glColor3ub(255, 255, 255);
@@ -194,15 +209,66 @@ static void wm_gesture_draw_circle(wmWindow *win, wmGesture *gt)
}
/* more than 64 intersections will just leak.. not much and not a likely scenario */
typedef struct TessData { int num; short *intersections[64]; } TessData;
static void combine_cb(GLdouble coords[3], GLdouble *vertex_data[4], GLfloat weight[4], void **dataOut, void *data)
{
short *vertex;
TessData *td = (TessData *)data;
vertex = (short *)malloc(2*sizeof(short));
vertex[0] = (short)coords[0];
vertex[1] = (short)coords[1];
*dataOut = vertex;
if (td->num < 64) {
td->intersections[td->num++] = vertex;
}
}
static void free_tess_data(GLUtesselator *tess, TessData *td)
{
int i;
for (i=0; i<td->num; i++) {
free(td->intersections[i]);
}
MEM_freeN(td);
td = NULL;
gluDeleteTess(tess);
}
static void wm_gesture_draw_lasso(wmWindow *win, wmGesture *gt)
{
short *lasso= (short *)gt->customdata;
int i;
TessData *data=MEM_callocN(sizeof(TessData), "tesselation data");
GLUtesselator *tess = gluNewTess();
/* use GLU tesselator to draw a filled lasso shape */
gluTessCallback(tess, GLU_TESS_BEGIN, glBegin);
gluTessCallback(tess, GLU_TESS_VERTEX, glVertex2sv);
gluTessCallback(tess, GLU_TESS_END, glEnd);
gluTessCallback(tess, GLU_TESS_COMBINE_DATA, combine_cb);
glEnable(GL_BLEND);
glColor4f(1.0, 1.0, 1.0, 0.05);
gluTessBeginPolygon (tess, data);
gluTessBeginContour (tess);
for (i=0; i<gt->points; i++, lasso+=2) {
GLdouble d_lasso[2] = {(GLdouble)lasso[0], (GLdouble)lasso[1]};
gluTessVertex (tess, d_lasso, lasso);
}
gluTessEndContour (tess);
gluTessEndPolygon (tess);
glDisable(GL_BLEND);
free_tess_data(tess, data);
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glColor3ub(96, 96, 96);
glLineStipple(1, 0xAAAA);
glBegin(GL_LINE_STRIP);
lasso= (short *)gt->customdata;
for(i=0; i<gt->points; i++, lasso+=2)
glVertex2sv(lasso);
if(gt->type==WM_GESTURE_LASSO)
@@ -228,7 +294,7 @@ static void wm_gesture_draw_cross(wmWindow *win, wmGesture *gt)
rcti *rect= (rcti *)gt->customdata;
glEnable(GL_LINE_STIPPLE);
glColor3ub(0, 0, 0);
glColor3ub(96, 96, 96);
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);