diff options
Diffstat (limited to 'source/blender/editors/interface/interface_ops.c')
| -rw-r--r-- | source/blender/editors/interface/interface_ops.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/source/blender/editors/interface/interface_ops.c b/source/blender/editors/interface/interface_ops.c index e03a171da18..d48d699d881 100644 --- a/source/blender/editors/interface/interface_ops.c +++ b/source/blender/editors/interface/interface_ops.c @@ -1071,6 +1071,222 @@ static void UI_OT_reloadtranslation(wmOperatorType *ot) ot->exec = reloadtranslation_exec; } + +/* -------------------------------------------------------------------- */ +/* Toggle Drag Operator */ + +typedef struct DragOpInfo { + bool xy_lock[2]; + float but_cent_start[2]; + eButType but_type_start; +} DragOpInfo; + +typedef struct DragOpPlotData { + bContext *C; + ARegion *ar; + bool is_set; + eButType but_type_start; + bool do_draw; + const uiBut *but_prev; +} DragOpPlotData; + +static const uiBut *ui_but_set_xy(bContext *C, ARegion *ar, const bool is_set, const eButType but_type_start, + const int xy[2], const uiBut *but_prev) +{ + uiBut *but = ui_but_find_mouse_over(ar, xy[0], xy[1]); + + if (but_prev == but) { + return but_prev; + } + + if (but && ui_is_but_bool(but) && but->type == but_type_start) { + /* is it pressed? */ + bool is_set_but = (ui_get_but_val(but) != 0.0); + BLI_assert(ui_is_but_bool(but) == true); + if (is_set_but != is_set) { + uiButExecute(C, but); + return but; + } + } + + return but_prev; +} + +static int ui_but_set_cb(int x, int y, void *data_v) +{ + DragOpPlotData *data = data_v; + int xy[2] = {x, y}; + data->but_prev = ui_but_set_xy(data->C, data->ar, data->is_set, data->but_type_start, xy, data->but_prev); + return 1; /* keep going */ +} + +/* operates on buttons between 2 mouse-points */ +static bool ui_but_set_xy_xy(bContext *C, ARegion *ar, const bool is_set, const eButType but_type_start, + const int xy_src[2], const int xy_dst[2]) +{ + DragOpPlotData data; + data.C = C; + data.ar = ar; + data.is_set = is_set; + data.but_type_start = but_type_start; + data.do_draw = false; + data.but_prev = NULL; + + + /* prevent dragging too fast loosing buttons */ + plot_line_v2v2i(xy_src, xy_dst, ui_but_set_cb, &data); + + return data.do_draw; +} + +static void ui_drag_but_set(bContext *C, wmOperator *op, const int xy_input[2]) +{ + ARegion *ar = CTX_wm_region(C); + DragOpInfo *drag_info = op->customdata; + bool do_draw = false; + + const bool is_set = RNA_boolean_get(op->ptr, "state"); + const int xy_last[2] = {RNA_int_get(op->ptr, "last_x"), + RNA_int_get(op->ptr, "last_y")}; + + int xy[2]; + + /** + * Initialize Locking: + * + * Check if we need to initialize the lock axis by finding if the first + * button we mouse over is X or Y aligned, then lock the mouse to that axis after. + */ + if (drag_info->xy_lock[0] == false && drag_info->xy_lock[1] == false) { + ARegion *ar = CTX_wm_region(C); + + /* first store the buttons original coords */ + uiBut *but = ui_but_find_mouse_over(ar, xy_input[0], xy_input[1]); + if (but) { + const float but_cent_new[2] = {BLI_rctf_cent_x(&but->rect), + BLI_rctf_cent_y(&but->rect)}; + + /* check if this is a different button, chances are high the button wont move about :) */ + if (len_manhattan_v2v2(drag_info->but_cent_start, but_cent_new) > 1.0f) { + if (fabsf(drag_info->but_cent_start[0] - but_cent_new[0]) < + fabsf(drag_info->but_cent_start[1] - but_cent_new[1])) + { + drag_info->xy_lock[0] = true; + } + else { + drag_info->xy_lock[1] = true; + } + } + } + } + /* done with axis locking */ + + + xy[0] = (drag_info->xy_lock[0] == false) ? xy_input[0] : xy_last[0]; + xy[1] = (drag_info->xy_lock[1] == false) ? xy_input[1] : xy_last[1]; + + + /* touch all buttons between last mouse coord and this one */ + do_draw = ui_but_set_xy_xy(C, ar, is_set, drag_info->but_type_start, xy_last, xy); + + if (do_draw) { + ED_region_tag_redraw(ar); + } + + RNA_int_set(op->ptr, "last_x", xy[0]); + RNA_int_set(op->ptr, "last_y", xy[1]); +} + +static int ui_drag_toggle_invoke(bContext *C, wmOperator *op, wmEvent *event) +{ + int xy_last[2] = {RNA_int_get(op->ptr, "last_x"), + RNA_int_get(op->ptr, "last_y")}; + + float but_cent_start[2]; + eButType but_type_start; + DragOpInfo *drag_info; + + { + /* find the button where we started dragging */ + ARegion *ar = CTX_wm_region(C); + uiBut *but = ui_but_find_mouse_over(ar, xy_last[0], xy_last[1]); + if (but) { + but_cent_start[0] = BLI_rctf_cent_x(&but->rect); + but_cent_start[1] = BLI_rctf_cent_y(&but->rect); + but_type_start = but->type; + } + else { + return OPERATOR_CANCELLED; + } + } + + drag_info = op->customdata = MEM_callocN(sizeof(DragOpInfo), __func__); + copy_v2_v2(drag_info->but_cent_start, but_cent_start); + drag_info->but_type_start = but_type_start; + + /* set the initial button */ + ui_drag_but_set(C, op, xy_last); + ui_drag_but_set(C, op, &event->x); + + WM_event_add_modal_handler(C, op); + return OPERATOR_RUNNING_MODAL; +} + +static int ui_drag_toggle_modal(bContext *C, wmOperator *op, wmEvent *event) +{ + bool done = false; + + switch (event->type) { + case LEFTMOUSE: + { + if (event->val != KM_PRESS) { + done = true; + } + break; + } + case MOUSEMOVE: + { + ui_drag_but_set(C, op, &event->x); + break; + } + } + + if (done) { + MEM_freeN(op->customdata); + return OPERATOR_FINISHED; + } + else { + return OPERATOR_RUNNING_MODAL; + } +} + +static int ui_drag_toggle_cancel(bContext *UNUSED(C), wmOperator *op) +{ + MEM_freeN(op->customdata); + return OPERATOR_CANCELLED; +} + +static void UI_OT_drag_toggle(wmOperatorType *ot) +{ + /* identifiers */ + ot->name = "Button Drag Toggle"; + ot->description = ""; + ot->idname = "UI_OT_drag_toggle"; + + /* api callbacks */ + ot->invoke = ui_drag_toggle_invoke; + ot->modal = ui_drag_toggle_modal; + ot->cancel = ui_drag_toggle_cancel; + + /* flags */ + ot->flag = OPTYPE_UNDO | OPTYPE_INTERNAL; + + /* properties */ + RNA_def_boolean(ot->srna, "state", true, "State", ""); + RNA_def_int(ot->srna, "last_x", 0, 0, INT_MAX, "X", "", 0, INT_MAX); + RNA_def_int(ot->srna, "last_y", 0, 0, INT_MAX, "Y", "", 0, INT_MAX); +} + /* ********************************************************* */ /* Registration */ @@ -1088,5 +1304,6 @@ void UI_buttons_operatortypes(void) WM_operatortype_append(UI_OT_edittranslation_init); #endif WM_operatortype_append(UI_OT_reloadtranslation); + WM_operatortype_append(UI_OT_drag_toggle); } |