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blender-archive/source/blender/editors/include/UI_view2d.h

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Port of part of the Interface code to 2.50. This is based on the current trunk version, so these files should not need merges. There's two things (clipboard and intptr_t) that are missing in 2.50 and commented out with XXX 2.48, these can be enabled again once trunk is merged into this branch. Further this is not all interface code, there are many parts commented out: * interface.c: nearly all button types, missing: links, chartab, keyevent. * interface_draw.c: almost all code, with some small exceptions. * interface_ops.c: this replaces ui_do_but and uiDoBlocks with two operators, making it non-blocking. * interface_regions: this is a part of interface.c, split off, contains code to create regions for tooltips, menus, pupmenu (that one is crashing currently), color chooser, basically regions with buttons which is fairly independent of core interface code. * interface_panel.c and interface_icons.c: not ported over, so no panels and icons yet. Panels should probably become (free floating) regions? * text.c: (formerly language.c) for drawing text and translation. this works but is using bad globals still and could be cleaned up. Header Files: * ED_datafiles.h now has declarations for datatoc_ files, so those extern declarations can be #included instead of repeated. * The user interface code is in UI_interface.h and other UI_* files. Core: * The API for creating blocks, buttons, etc is nearly the same still. Blocks are now created per region instead of per area. * The code was made non-blocking, which means that any changes and redraws should be possible while editing a button. That means though that we need some sort of persistence even though the blender model is to recreate buttons for each redraw. So when a new block is created, some matching happens to find out which buttons correspond to buttons in the previously created block, and for activated buttons some data is then copied over to the new button. * Added UI_init/UI_init_userdef/UI_exit functions that should initialize code in this module, instead of multiple function calls in the windowmanager. * Removed most static/globals from interface.c. * Removed UIafterfunc_ I don't think it's needed anymore, and not sure how it would integrate here? * Currently only full window redraws are used, this should become per region and maybe per button later. Operators: * Events are currently handled through two operators: button activate and menu handle. Operators may not be the best way to implement this, since there are currently some issues with events being missed, but they can become a special handler type instead, this should not be a big change. * The button activate operator runs as long as a button is active, and will handle all interaction with that button until the button is not activated anymore. This means clicking, text editing, number dragging, opening menu blocks, etc. * Since this operator has to be non-blocking, the ui_do_but code needed to made non-blocking. That means variables that were previously on the stack, now need to be stored away in a struct such that they can be accessed again when the operator receives more events. * Additionally the place in the ui_do_but code indicated the state, now that needs to be set explicit in order to handle the right events in the right state. So an activated button can be in one of these states: init, highlight, wait_flash, wait_release, wait_key_event, num_editing, text_editing, text_selecting, block_open, exit. * For each button type an ui_apply_but_* function has also been separated out from ui_do_but. This makes it possible to continuously apply the button as text is being typed for example, and there is an option in the code to enable this. Since the code non-blocking and can deal with the button being deleted even, it should be safe to do this. * When editing text, dragging numbers, etc, the actual data (but->poin) is not being edited, since that would mean data is being edited without correct updates happening, while some other part of blender may be accessing that data in the meantime. So data values, strings, vectors are written to a temporary location and only flush in the apply function. Regions: * Menus, color chooser, tooltips etc all create screen level regions. Such menu blocks give a handle to the button that creates it, which will contain the results of the menu block once a MESSAGE event is received from that menu block. * For this type of menu block the coordinates used to be in window space. They are still created that way and ui_positionblock still works with window coordinates, but after that the block and buttons are brought back to region coordinates since these are now contained in a region. * The flush/overdraw frontbuffer drawing code was removed, the windowmanager should have enough information with these screen level regions to have full control over what gets drawn when and to then do correct compositing. Testing: * The header in the time space currently has some buttons to test the UI code.
2008-11-11 18:31:32 +00:00
/**
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2008 Blender Foundation.
* All rights reserved.
*
*
* Contributor(s): Blender Foundation
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef UI_VIEW2D_H
#define UI_VIEW2D_H
/* start of a generic 2d view with should allow drawing grids,
* panning, zooming, scrolling, .. */
#define V2D_UNIT_SECONDS 0
#define V2D_UNIT_FRAMES 1
#define V2D_GRID_CLAMP 0
#define V2D_GRID_NOCLAMP 1
#define V2D_IS_CLIPPED 12000
#define V2D_HORIZONTAL_LINES 1
#define V2D_VERTICAL_LINES 2
#define V2D_HORIZONTAL_AXIS 4
#define V2D_VERTICAL_AXIS 8
struct View2D;
struct View2DGrid;
struct bContext;
typedef struct View2DGrid View2DGrid;
/* setup */
void UI_view2d_ortho(const struct bContext *C, struct View2D *v2d);
void UI_view2d_update_size(struct View2D *v2d, int winx, int winy);
/* grid drawing */
View2DGrid *UI_view2d_calc_grid(const struct bContext *C, struct View2D *v2d, int unit, int type, int winx, int winy);
void UI_view2d_draw_grid(const struct bContext *C, struct View2D *v2d, View2DGrid *grid, int flag);
void UI_view2d_free_grid(View2DGrid *grid);
/* coordinate conversion */
void UI_view2d_region_to_view(struct View2D *v2d, short x, short y, float *viewx, float *viewy);
void UI_view2d_view_to_region(struct View2D *v2d, float x, float y, short *regionx, short *regiony);
void UI_view2d_to_region_no_clip(struct View2D *v2d, float x, float y, short *regionx, short *region_y);
#endif /* UI_VIEW2D_H */
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