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zoom to mouse for 2D view

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note: this works in all views except for nodes which seem to use the view bounds differently
This commit is contained in:
Campbell Barton 2009-12-22 08:39:59 +00:00
parent f4ce1bea0f
commit 5c3879f8fb
1 changed files with 28 additions and 4 deletions
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32
source/blender/editors/interface/view2d_ops.c
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@ -656,6 +656,7 @@ typedef struct v2dViewZoomData {
int lastx, lasty; /* previous x/y values of mouse in window */
float dx, dy; /* running tally of previous delta values (for obtaining final zoom) */
float mx_2d, my_2d; /* initial mouse location in v2d coords */
} v2dViewZoomData;
/* initialise panning customdata */
@ -701,8 +702,17 @@ static void view_zoomdrag_apply(bContext *C, wmOperator *op)
v2d->cur.xmax -= 2*dx;
}
else {
v2d->cur.xmin += dx;
v2d->cur.xmax -= dx;
if(U.uiflag & USER_ZOOM_TO_MOUSEPOS) {
float mval_fac = (vzd->mx_2d - v2d->cur.xmin) / (v2d->cur.xmax-v2d->cur.xmin);
float mval_faci = 1.0 - mval_fac;
float ofs= (mval_fac * dx) - (mval_faci * dx);
v2d->cur.xmin += ofs + dx;
v2d->cur.xmax += ofs - dx;
}
else {
v2d->cur.xmin += dx;
v2d->cur.xmax -= dx;
}
}
}
if ((v2d->keepzoom & V2D_LOCKZOOM_Y)==0) {
@ -710,8 +720,17 @@ static void view_zoomdrag_apply(bContext *C, wmOperator *op)
v2d->cur.ymax -= 2*dy;
}
else {
v2d->cur.ymin += dy;
v2d->cur.ymax -= dy;
if(U.uiflag & USER_ZOOM_TO_MOUSEPOS) {
float mval_fac = (vzd->my_2d - v2d->cur.ymin) / (v2d->cur.ymax-v2d->cur.ymin);
float mval_faci = 1.0 - mval_fac;
float ofs= (mval_fac * dy) - (mval_faci * dy);
v2d->cur.ymin += ofs + dy;
v2d->cur.ymax += ofs - dy;
}
else {
v2d->cur.ymin += dy;
v2d->cur.ymax -= dy;
}
}
}
@ -764,6 +783,11 @@ static int view_zoomdrag_invoke(bContext *C, wmOperator *op, wmEvent *event)
RNA_float_set(op->ptr, "deltax", 0);
RNA_float_set(op->ptr, "deltay", 0);
if(U.uiflag & USER_ZOOM_TO_MOUSEPOS) {
ARegion *ar= CTX_wm_region(C);
UI_view2d_region_to_view(&ar->v2d, event->x - ar->winrct.xmin, event->y - ar->winrct.ymin, &vzd->mx_2d, &vzd->my_2d);
}
if (v2d->keepofs & V2D_LOCKOFS_X)
WM_cursor_modal(window, BC_NS_SCROLLCURSOR);
else if (v2d->keepofs & V2D_LOCKOFS_Y)