Campbell Barton
846c034323
Resolves issue were it wasn't possible to have a single column toolbar when zoomed out.
96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup edscr
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*
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* Helper functions for area/region API.
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*/
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#include "DNA_userdef_types.h"
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#include "BLI_blenlib.h"
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#include "BLI_utildefines.h"
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#include "RNA_access.h"
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#include "RNA_types.h"
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#include "WM_message.h"
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#include "ED_screen.h"
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#include "UI_interface.h"
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#include "UI_interface_icons.h"
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/* -------------------------------------------------------------------- */
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/** \name Generic Tool System Region Callbacks
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* \{ */
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/**
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* Callback for #ARegionType.message_subscribe
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*/
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void ED_region_generic_tools_region_message_subscribe(const struct bContext *UNUSED(C),
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struct WorkSpace *UNUSED(workspace),
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struct Scene *UNUSED(scene),
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struct bScreen *UNUSED(screen),
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struct ScrArea *UNUSED(sa),
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struct ARegion *ar,
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struct wmMsgBus *mbus)
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{
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wmMsgSubscribeValue msg_sub_value_region_tag_redraw = {
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.owner = ar,
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.user_data = ar,
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.notify = ED_region_do_msg_notify_tag_redraw,
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};
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WM_msg_subscribe_rna_anon_prop(mbus, WorkSpace, tools, &msg_sub_value_region_tag_redraw);
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}
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/**
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* Callback for #ARegionType.snap_size
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*/
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int ED_region_generic_tools_region_snap_size(const ARegion *ar, int size, int axis)
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{
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if (axis == 0) {
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/* Using Y axis avoids slight feedback loop when adjusting X. */
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const float aspect = BLI_rctf_size_y(&ar->v2d.cur) / (BLI_rcti_size_y(&ar->v2d.mask) + 1);
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const float icon_size = ICON_DEFAULT_HEIGHT_TOOLBAR / aspect;
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const float column = 1.25f * icon_size;
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const float margin = 0.5f * icon_size;
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const float snap_units[] = {
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column + margin,
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(2.0f * column) + margin,
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(2.7f * column) + margin,
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};
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int best_diff = INT_MAX;
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int best_size = size;
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/* Only snap if less than last snap unit. */
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if (size <= snap_units[ARRAY_SIZE(snap_units) - 1]) {
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for (uint i = 0; i < ARRAY_SIZE(snap_units); i += 1) {
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const int test_size = snap_units[i];
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const int test_diff = ABS(test_size - size);
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if (test_diff < best_diff) {
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best_size = test_size;
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best_diff = test_diff;
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}
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}
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}
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return best_size;
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}
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return size;
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}
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/** \} */
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