En route to on-canvas gradient editing, add support for persistent
handle selection to GimpToolLine (a handle being either an endpoint
or a slider). Handles are selected through clicking, however,
unlike before, the selection persists after the mouse is released.
A new "selection" property specifies the currently-selected handle
(who knows, maybe in the future we'll add multi-selection), and a
new "selection-changed" signal is emitted when the selection changes.
The visual feedback has been changed to better suit the new behavior,
and the behaviors yet to be added: The selected handle is marked
using highlighting; the highlighting doesn't change while hovering
over other handles. Only the hit-test circle is used as hover
indication, however, we use a fixed-size circle, and only show the
circle for the currently hovered-over handle -- no more trippy
expanding circles :)
A few minor changes along the way:
- The selected handle is now the (first) one that's closest to the
cursor, instead of the first one to pass hit-testing.
- We don't move the selectd handle upon button-press, only upon
motion, so that handles can be selected without moving them.
- Show a MOVE cursor modifier when hovering over a handle.
In gimp_canvas_sample_point_get_extents(), use the drawn number's
actual size instead of some random constant that was good enough for
my own font size.
Updating the cursor information involves sampling the active image/
drawable, which can be expensive, especially if there are filters
active that also respond to cursor motion, e.g., while using the
warp tool.
Move the actual updating to an idle function. This dramatically
improves responsiveness in these situations.
...in both the core and libgimp.
Images now know what the default mode for new layers is:
- NORMAL for empty images
- NORMAL for images with any non-legacy layer
- NORMAL_LEGAVY for images with only legacy layers
This changes behavior when layers are created from the UI, but *also*
when created by plug-ins (yes there is a compat issue here):
- Most (all?) single-layer file importers now create NORMAL layers
- Screenshot, Webpage etc also create NORMAL layers
Scripts that create images from scratch (logos etc) should not be
affected because they usually have NORMAL_LEGACY hardcoded.
3rd party plug-ins and scripts will also behave old-style unless they
get ported to gimp_image_get_default_new_layer_mode().
During constrained motion, round the slider value before clamping
it, so that the slider limits are always enforced. Additionally,
snap the slider to 1/12-ths of the line length, rather than
1/24-ths.
Make sure that sliders can never have negative-zero values, which
can result in a -inf base for spiral.
and update the grid as soon as a constraint is changed, not only on
the next motion. Change GimpTransformTool to forward the events to the
widget if it exists, but still handle them if it doesn't (yes this
code duplication is ugly, but the widget can hardly handle events if
it doesn't exist...).
More than 2000 lines of code less in app/, instead of
if (instance->member)
{
g_object_unref/g_free/g_whatever (instance->member);
instance->member = NULL;
}
we now simply use
g_clear_object/pointer (&instance->member);
Add supprt for placing sliders on a GimpToolLine -- handles that can
be dragged over the line. The sliders are accesible through a new
"sliders" property, and via the gimp_tool_line_{get,set}_sliders()
functions.
Add a slider-line controller, which works like a line controller,
but whose callback also supplies/takes an array of sliders.
Note that the data type for individual sliders is called
GimpControllerSlider (in particular, it's not line specific), so
that we may use it with other controller/tool-widget types in the
future.
- introduce new state "boolean is_first" which tracks if the currently
drawn rectangle is the first with this instance
- cancel the widget if there was no movement when creating the first
rectangle
- undo to the previous rectangle if the user created a zero-extent
rectangle
- also undo to the previous rectangle if a newly drawn rectangle is
canceled with button-3 release
because of bailing out early after emitting "response". Instead, don't
ref the object around this function, and move the "response" emission
to the end of the function.
- unset "rect_adjusting" before bailing out on button_release()
- update the integer rectangle when the double properties change
- don't try to show handles with a size of < 3
- remove unused members
- shorten some variable names
which is a replacement for GimpRectangleTool. It's a massive piece of
code and I'm not sure everyting works as it should, but it seems to do
crop stuff without any glitches.
and a default key_press() handler that emits CONFIRM, CANCEL and RESET
responses. Remove code with the same purpose from all subclasses.
Change tools feed key_press() to the widget and connect to its
"response" instead of implementing key_press() themselves. This will
only be better and less code after the tool side of this is done
generically.
Rename gimp_tool_widget_snap_offsets() to set_snap_offsets(),
and add gimp_tool_widget_get_snap_offsets().
Also rename gimp_tool_widget_status() to set_status(), and
add new function and signal set_status_coords().
