Add gimp_display_shell_[un]transform_with_scale(), which are
similar to gimp_display_shell_[un]transform(), however, they
transform the bounding box to/from uniformly-scaled image space,
given the scale factor as a parameter. These functions are more
accurate than using gimp_display_shell_[un]transform() and applying
the scaling separately, in particular, when the scale matches the
(horizontal or vertical) display scale.
Use these functions in gimp_display_shell_draw_image(), to avoid an
off-by-one error when transforming screen-space chunks to image-
space chunks, which leads to the symptoms described in the bug.
Fix another potential off-by-one error affecting non-uniformly
scaled images, and window scale factors other than 1.
They are unreliable because every type checking cast discards them,
they are useless anyway, visual clutter, added inconsistently, and
generally suck. Wanted to do this a long time ago, it was a bad idea
in the first place.
Added complete API for zoom/unzoom (scale and scroll) and
rotate/unrotate, with the same set of functions as the existing
transform/untransform. Moved some special case functions to the
namespaces they belong.
First version of display rotation, inspired by gimp-painter.
The rotation always happens around the image's center.
The only "UI" for rotating is currently shift+middle-drag and
shift+space-drag. Control constrains the angle to 15 degrees
and is currently the only way to go back to "no rotation".
- GimpCanvasBoundary takes unsorted BoundSeg arrays now and uses
gimp_display_shell_transform_boundary() and gimp_cairo_add_boundary().
- Nobody calls boundary_sort() any longer for the purpose of displaying
a boundary.
- gimp_display_shell_transform_boundary() got offset parameters
so it can transform things that are not in the image's coordinate
system.
and duplicate quite some code in the spirit of the previous commit
(rename stuff using GdkSegment to _old() and add new functions that
return arrays of BoundSegs, for the lack of a nicer struct). This is
all very ugly and will change.
2009-01-17 Michael Natterer <mitch@gimp.org>
* all files with a GPL header and all COPYING files:
Change licence to GPLv3 (and to LGPLv3 for libgimp).
Cleaned up some copyright headers and regenerated the parsers in
the ImageMap plugin.
svn path=/trunk/; revision=27913
2008-08-10 Martin Nordholts <martinn@svn.gnome.org>
* app/display/gimpdisplayshell-draw.[ch]
* app/display/gimpdisplayshell-render.[ch]
* app/display/gimpdisplayshell-transform.[ch]
* app/display/gimpdisplayshell-appearance.[ch]: Sprinkle as many
const qualifiers we can without any implementation changes.
svn path=/trunk/; revision=26477
2008-02-26 Michael Natterer <mitch@gimp.org>
* app/display/gimpdisplayshell-transform.[ch]
(gimp_display_shell_transform_points)
* app/tools/gimpdrawtool.[ch] (gimp_draw_tool_draw_lines): take
arrays of GimpVector2 instead of arrays of gdouble to represent
the input points.
* app/display/gimpdisplayshell-draw.c
* app/tools/gimppolygonselecttool.c
* app/tools/gimpfreeselecttool.c: don't cast the GimpVector2 arrays
to double arrays when passing them to above functions.
* app/tools/gimpiscissorstool.c: create a temporary GimpVector2
array instead of a temporary gdouble array.
svn path=/trunk/; revision=24979
2006-08-09 Sven Neumann <sven@gimp.org>
* app/display/gimpdisplayshell-transform.[ch]: added new function
gimp_display_shell_transform_segments().
* app/display/gimpdisplayshell-selection.c (selection_transform_segs)
* app/tools/gimpregionselecttool.c
(gimp_region_select_tool_calculate): use the new function instead
of looping over the segments.
2006-08-09 Sven Neumann <sven@gimp.org>
* app/display/gimpdisplayshell-transform.[ch]: renamed
transform_coords() to transform_coordinate(); same for the
untransform variant. Added new functions transform_points() and
transform_coords() that work on arrays.
* app/display/gimpdisplayshell-autoscroll.c
* app/display/gimpdisplayshell-callbacks.c: changed accordingly.
* app/tools/gimpdrawtool.c (gimp_draw_tool_draw_lines)
(gimp_draw_tool_draw_strokes): use the new transform functions.
2004-03-20 Pedro Gimeno <pggimeno@wanadoo.es>
Fixed several off-by-one problems in display:
* app/display/gimpdisplayshell.h (PROJ_ROUND): New macro to apply
to a float the same rounding method as the one used when rendering.
(SCALEX, SCALEY): Use PROJ_ROUND instead of truncating.
* app/display/gimpdisplayshell-transform.c
(gimp_display_shell_transform_xy): Accept gdouble image coordinates
even if the returned screen coordinates are integer. Use PROJ_ROUND
instead of (gint) to apply proper rounding. Fixes bug #137566.
* app/display/gimpdisplayshell-transform.h
(gimp_display_shell_transform_xy): changed accordingly.
* app/display/gimpdisplayshell-draw.c
* app/tools/gimpdrawtool.c: make sure everywhere that PROJ_ROUND
is used either directly or through gimp_display_shell_transform_xy,
instead of using arbitrary rounding methods.
2004-01-15 Michael Natterer <mitch@gimp.org>
Fixed bug #78732 (don't paste off screen):
* app/display/gimpdisplayshell-transform.[ch]: added new function
gimp_display_shell_untransform_viewport() which returns the
visible rectangle of the image in image coordinates.
* app/core/gimp-edit.[ch] (gimp_edit_paste): added viewport
parameters and changed positioning of the pasted layer as follows:
- if there is a selection, center on the selection (just as before).
- if there is no viewport, center on the active drawable.
- if the viewport intersects with the active drawable, center
on the intersection.
- if the viewport does *not* intersect with the active drawable,
center on the active drawable (off-screen, but better than pasting
something that will be invisible due to floating selection clipping).
- if there is no active drawable, center on the viewport.
- if there is no active drawable and no viewport, center on the image.
* app/widgets/gimpbufferview.c (gimp_buffer_view_paste_clicked)
(gimp_buffer_view_paste_into_clicked)
* app/display/gimpdisplayshell-dnd.c (gimp_display_shell_drop_buffer)
* app/gui/edit-commands.c (edit_paste_cmd_callback)
(edit_paste_into_cmd_callback): ask the shell for the viewport
and pass it to gimp_edit_paste().
* app/display/gimpdisplayshell-dnd.c
(gimp_display_shell_drop_drawable): center the created layer on
the viewport.
* app/tools/gimpmovetool.c (gimp_move_tool_button_release): use
gimp_display_shell_untransform_viewport() (its code was taken from
here).
* tools/pdbgen/pdb/edit.pdb: pass "no viewport" to gimp_edit_paste().
* app/pdb/edit_cmds.c: regenerated.
2003-07-10 Michael Natterer <mitch@gimp.org>
* app/display/gimpdisplayshell-transform.[ch]: removed
gimp_display_shell_transform_boundary() again...
* app/tools/gimpdrawtool.[ch]: ...and added as
gimp_draw_tool_draw_boundary(). Removed the GimpDrawToolState enum
and the "draw_state" member since they were redundant. Cleanup.
* app/tools/gimpeditselectiontool.c: changed accordingly.
* app/tools/gimppainttool.[ch]: added a brush preview so we
finally see where we will paint. Fixes bug #32498. Cleanup.
* app/tools/tool_manager.c: also look at draw_tool->gdisp, not
only at tool->gdisp when deciding whether the active tool has to
be suspended/resumed/halted. Fixes a couple of fnords with the
line preview and the new brush preview.
* app/tools/gimpcolortool.c: minor cleanup.
2003-07-09 Michael Natterer <mitch@gimp.org>
* app/display/gimpdisplayshell-transform.[ch]: added new function
gimp_display_shell_transform_boundary() which takes an array of
BoundSegs and returns an array of GdkSegments.
* app/tools/gimpeditselectiontool.c: use it.
2003-01-03 Sven Neumann <sven@gimp.org>
* configure.in: bumped the version number to 1.3.12.
* app/display/Makefile.am
* app/display/gimpdisplayshell-cursor.[ch]
* app/display/gimpdisplayshell-title.[ch]
* app/display/gimpdisplayshell-transform.[ch]: new files with code
that used to live in gimpdisplayshell.c.
* app/display/gimpdisplay-foreach.c
* app/display/gimpdisplay.c
* app/display/gimpdisplayshell-callbacks.c
* app/display/gimpdisplayshell-handlers.c
* app/display/gimpdisplayshell-selection.c
* app/display/gimpdisplayshell.[ch]
* app/tools/gimpbezierselecttool.c
* app/tools/gimpcroptool.c
* app/tools/gimpdrawtool.c
* app/tools/gimpeditselectiontool.c
* app/tools/gimpfuzzyselecttool.c
* app/tools/gimpmovetool.c
* app/tools/gimptool.c: changed accordingly.
