From baf485918b1a09dac49ca8a95e0df55f97fe0b9d Mon Sep 17 00:00:00 2001 From: Sergey Sharybin Date: Fri, 24 Feb 2012 14:01:42 +0000 Subject: TODO item: zoom to mouse location in image editor --- source/blender/editors/space_image/image_ops.c | 114 ++++++++++++++++++------- 1 file changed, 84 insertions(+), 30 deletions(-) (limited to 'source') diff --git a/source/blender/editors/space_image/image_ops.c b/source/blender/editors/space_image/image_ops.c index 3b7992e0468..6742852cbf4 100644 --- a/source/blender/editors/space_image/image_ops.c +++ b/source/blender/editors/space_image/image_ops.c @@ -82,33 +82,45 @@ /******************** view navigation utilities *********************/ -static void sima_zoom_set(SpaceImage *sima, ARegion *ar, float zoom) +static void sima_zoom_set(SpaceImage *sima, ARegion *ar, float zoom, float location[2]) { float oldzoom= sima->zoom; int width, height; sima->zoom= zoom; - if (sima->zoom > 0.1f && sima->zoom < 4.0f) - return; + if (sima->zoom < 0.1f || sima->zoom > 4.0f) { + /* check zoom limits */ + ED_space_image_size(sima, &width, &height); - /* check zoom limits */ - ED_space_image_size(sima, &width, &height); + width *= sima->zoom; + height *= sima->zoom; + + if((width < 4) && (height < 4)) + sima->zoom= oldzoom; + else if((ar->winrct.xmax - ar->winrct.xmin) <= sima->zoom) + sima->zoom= oldzoom; + else if((ar->winrct.ymax - ar->winrct.ymin) <= sima->zoom) + sima->zoom= oldzoom; + } - width *= sima->zoom; - height *= sima->zoom; + if((U.uiflag & USER_ZOOM_TO_MOUSEPOS) && location) { + float aspx, aspy, w, h; - if((width < 4) && (height < 4)) - sima->zoom= oldzoom; - else if((ar->winrct.xmax - ar->winrct.xmin) <= sima->zoom) - sima->zoom= oldzoom; - else if((ar->winrct.ymax - ar->winrct.ymin) <= sima->zoom) - sima->zoom= oldzoom; + ED_space_image_size(sima, &width, &height); + ED_space_image_aspect(sima, &aspx, &aspy); + + w= width*aspx; + h= height*aspy; + + sima->xof+= ((location[0]-0.5f)*w-sima->xof)*(sima->zoom-oldzoom)/sima->zoom; + sima->yof+= ((location[1]-0.5f)*h-sima->yof)*(sima->zoom-oldzoom)/sima->zoom; + } } -static void sima_zoom_set_factor(SpaceImage *sima, ARegion *ar, float zoomfac) +static void sima_zoom_set_factor(SpaceImage *sima, ARegion *ar, float zoomfac, float location[2]) { - sima_zoom_set(sima, ar, sima->zoom*zoomfac); + sima_zoom_set(sima, ar, sima->zoom*zoomfac, location); } #if 0 // currently unused @@ -343,11 +355,13 @@ typedef struct ViewZoomData { float x, y; float zoom; int event_type; + float location[2]; } ViewZoomData; static void image_view_zoom_init(bContext *C, wmOperator *op, wmEvent *event) { SpaceImage *sima= CTX_wm_space_image(C); + ARegion *ar= CTX_wm_region(C); ViewZoomData *vpd; op->customdata= vpd= MEM_callocN(sizeof(ViewZoomData), "ImageViewZoomData"); @@ -357,7 +371,9 @@ static void image_view_zoom_init(bContext *C, wmOperator *op, wmEvent *event) vpd->y= event->y; vpd->zoom= sima->zoom; vpd->event_type= event->type; - + + UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &vpd->location[0], &vpd->location[1]); + WM_event_add_modal_handler(C, op); } @@ -380,7 +396,7 @@ static int image_view_zoom_exec(bContext *C, wmOperator *op) SpaceImage *sima= CTX_wm_space_image(C); ARegion *ar= CTX_wm_region(C); - sima_zoom_set_factor(sima, ar, RNA_float_get(op->ptr, "factor")); + sima_zoom_set_factor(sima, ar, RNA_float_get(op->ptr, "factor"), NULL); ED_region_tag_redraw(CTX_wm_region(C)); @@ -401,11 +417,13 @@ static int image_view_zoom_invoke(bContext *C, wmOperator *op, wmEvent *event) if (event->type == MOUSEZOOM) { SpaceImage *sima= CTX_wm_space_image(C); ARegion *ar= CTX_wm_region(C); - float factor; - + float factor, location[2]; + + UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &location[0], &location[1]); + factor= 1.0f + (event->x-event->prevx+event->y-event->prevy)/300.0f; RNA_float_set(op->ptr, "factor", factor); - sima_zoom_set(sima, ar, sima->zoom*factor); + sima_zoom_set(sima, ar, sima->zoom*factor, location); ED_region_tag_redraw(CTX_wm_region(C)); return OPERATOR_FINISHED; @@ -427,7 +445,7 @@ static int image_view_zoom_modal(bContext *C, wmOperator *op, wmEvent *event) case MOUSEMOVE: factor= 1.0f + (vpd->x-event->x+vpd->y-event->y)/300.0f; RNA_float_set(op->ptr, "factor", factor); - sima_zoom_set(sima, ar, vpd->zoom*factor); + sima_zoom_set(sima, ar, vpd->zoom*factor, vpd->location); ED_region_tag_redraw(CTX_wm_region(C)); break; default: @@ -505,7 +523,7 @@ static int image_view_ndof_invoke(bContext *C, wmOperator *UNUSED(op), wmEvent * if (U.ndof_flag & NDOF_ZOOM_INVERT) zoom_factor = -zoom_factor; - sima_zoom_set_factor(sima, ar, zoom_factor); + sima_zoom_set_factor(sima, ar, zoom_factor, NULL); sima->xof += pan_x; sima->yof += pan_y; @@ -556,10 +574,10 @@ static int image_view_all_exec(bContext *C, wmOperator *UNUSED(op)) /* find the zoom value that will fit the image in the image space */ zoomx= width/w; zoomy= height/h; - sima_zoom_set(sima, ar, 1.0f/power_of_2(1/MIN2(zoomx, zoomy))); + sima_zoom_set(sima, ar, 1.0f/power_of_2(1/MIN2(zoomx, zoomy)), NULL); } else - sima_zoom_set(sima, ar, 1.0f); + sima_zoom_set(sima, ar, 1.0f, NULL); sima->xof= sima->yof= 0.0f; @@ -617,7 +635,7 @@ static int image_view_selected_exec(bContext *C, wmOperator *UNUSED(op)) size= 0.5f*MAX2(d[0], d[1])*MAX2(width, height)/256.0f; if(size<=0.01f) size= 0.01f; - sima_zoom_set(sima, ar, 0.7f/size); + sima_zoom_set(sima, ar, 0.7f/size, NULL); ED_region_tag_redraw(CTX_wm_region(C)); @@ -642,18 +660,32 @@ void IMAGE_OT_view_selected(wmOperatorType *ot) /********************** view zoom in/out operator *********************/ -static int image_view_zoom_in_exec(bContext *C, wmOperator *UNUSED(op)) +static int image_view_zoom_in_exec(bContext *C, wmOperator *op) { SpaceImage *sima= CTX_wm_space_image(C); ARegion *ar= CTX_wm_region(C); + float location[2]; - sima_zoom_set_factor(sima, ar, 1.25f); + RNA_float_get_array(op->ptr, "location", location); + + sima_zoom_set_factor(sima, ar, 1.25f, location); ED_region_tag_redraw(CTX_wm_region(C)); return OPERATOR_FINISHED; } +static int image_view_zoom_in_invoke(bContext *C, wmOperator *op, wmEvent *event) +{ + ARegion *ar= CTX_wm_region(C); + float location[2]; + + UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &location[0], &location[1]); + RNA_float_set_array(op->ptr, "location", location); + + return image_view_zoom_in_exec(C, op); +} + void IMAGE_OT_view_zoom_in(wmOperatorType *ot) { /* identifiers */ @@ -661,22 +693,40 @@ void IMAGE_OT_view_zoom_in(wmOperatorType *ot) ot->idname= "IMAGE_OT_view_zoom_in"; /* api callbacks */ + ot->invoke= image_view_zoom_in_invoke; ot->exec= image_view_zoom_in_exec; ot->poll= space_image_main_area_poll; + + /* properties */ + RNA_def_float_vector(ot->srna, "location", 2, NULL, -FLT_MAX, FLT_MAX, "Location", "Cursor location in screen coordinates", -10.0f, 10.0f); } -static int image_view_zoom_out_exec(bContext *C, wmOperator *UNUSED(op)) +static int image_view_zoom_out_exec(bContext *C, wmOperator *op) { SpaceImage *sima= CTX_wm_space_image(C); ARegion *ar= CTX_wm_region(C); + float location[2]; + + RNA_float_get_array(op->ptr, "location", location); - sima_zoom_set_factor(sima, ar, 0.8f); + sima_zoom_set_factor(sima, ar, 0.8f, location); ED_region_tag_redraw(CTX_wm_region(C)); return OPERATOR_FINISHED; } +static int image_view_zoom_out_invoke(bContext *C, wmOperator *op, wmEvent *event) +{ + ARegion *ar= CTX_wm_region(C); + float location[2]; + + UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &location[0], &location[1]); + RNA_float_set_array(op->ptr, "location", location); + + return image_view_zoom_out_exec(C, op); +} + void IMAGE_OT_view_zoom_out(wmOperatorType *ot) { /* identifiers */ @@ -684,8 +734,12 @@ void IMAGE_OT_view_zoom_out(wmOperatorType *ot) ot->idname= "IMAGE_OT_view_zoom_out"; /* api callbacks */ + ot->invoke= image_view_zoom_out_invoke; ot->exec= image_view_zoom_out_exec; ot->poll= space_image_main_area_poll; + + /* properties */ + RNA_def_float_vector(ot->srna, "location", 2, NULL, -FLT_MAX, FLT_MAX, "Location", "Cursor location in screen coordinates", -10.0f, 10.0f); } /********************** view zoom ratio operator *********************/ @@ -695,7 +749,7 @@ static int image_view_zoom_ratio_exec(bContext *C, wmOperator *op) SpaceImage *sima= CTX_wm_space_image(C); ARegion *ar= CTX_wm_region(C); - sima_zoom_set(sima, ar, RNA_float_get(op->ptr, "ratio")); + sima_zoom_set(sima, ar, RNA_float_get(op->ptr, "ratio"), NULL); /* ensure pixel exact locations for draw */ sima->xof= (int)sima->xof; -- cgit v1.2.3