This patch adds the ability to refine a editing mask by a color-range
based on the pixels of the content image. This is useful for image
editing where mask restirction via luminosity might not fit or just
certain color ranges should be edited.
This adds a function where editing masks can be refined by selecting
a luminosity range that is applied to the content image and mapped to
the editing mask. This function allows the editing of image regions
that match only certain luminosity values.
This patch adds a new gradient tool to pixelpaint that allows us to fill
the canvas with a smooth color gradient outline at the edge of the
filled area.
Lasso selection works by allowing the user to draw an arbitrary shape
much like the pen tool and ensuring the shape is closed by connecting
the start/end points when the user is done drawing. Everything inside
the shape becomes the selection.
Selection is determined via an outer flood fill. We begin a flood fill
from a point that is guaranteed to be outside of the drawn shape, and
anything the fill doesn't touch is determined to be the selection
region.
Otherwise, we end up propagating those dependencies into targets that
link against that library, which creates unnecessary link-time
dependencies.
Also included are changes to readd now missing dependencies to tools
that actually need them.
Polygonal selection tool allows for the drawing of any arbitrary
polygonal shape. It tracks clicked points in a vector, upon double
clicking we finalize the polygon and generate the selection mask. The
user can press the escape key during selection to cancel.
The mask is generated as follows:
- First we calculate the size of the bounding rect needed to hold the
polygon
- We add 2 pixels to height/width to allow us a 1 pixel border, the
polygon will be centered in this bitmap
- Draw the polygon into the bitmap via Gfx::Painter, making sure to
connect final polygon point to the first to ensure an enclosed shape
- Generate a selection mask the size of the bitmap, with all pixels
initially selected
- Perform a flood fill from (0,0) which is guaranteed to be outside the
polygon
- For every pixel reached by the flood fill, we clear the selected pixel
from the selection mask
- Finally we merge the selection mask like other selection tools.
We previously put the generated headers in SOURCES, which did not mark
them as GENERATED (and did not produce a proper dependency).
This commit moves all generated headers into GENERATED_SOURCES, and
removes useless header SOURCES.
This filter mimics the functionality from Photoshop and other image
editors, allowing you to adjust the hue, saturation, and lightness of
an image. I always found this a very handy feature :^)
The ImageProcessor singleton is intended to be used by all sorts of
image processing which might take some time to complete; or other
background actions. We're not using BackgroundTask here because this
system is specifically designed to work with task queues and PixelPaint
interaction; e.g. it provides common image processing tasks such as
filter application.
Vectorscopes are a standard tool in professional video/film color
grading. *Very* simply, the Vectorscope shows image colors with hue as
the angle and saturation as the radius; brightness for each point in the
scope is determined by the number of "color vectors" at that point. More
specifically, the Vectorscope shows a 2D UV histogram of the image,
where U and V are the chroma ("color") channels of the image.
Co-authored-by: MacDue <macdue@dueutil.tech>
Wand Selection tool uses similar logic to the Bucket Tool. Flood filling
and threshold calculations to determine the affected area just in this
case we do not set the pixels of the selected area, instead we use
those pixels to alter the selection mask.
In the future we can probably abstract out the shared flood logic so
both tools can share the code.
The median filter replaces a pixel with the median of all pixels
(usually grey value is used) in a square neighborhood. This is a
standard image processing filter used for denoising, as despite its
simplicity it can e.g. retain edges quite well.
The first implementation is quite inefficient mostly to environmental
constraints. Due to how images are passed to the processing function,
two unnecessary copies happen. And because there's no fast sorting
algorithm for small arrays (insertion sort) yet, quick sort needs to be
used which is quite slow on this scale.
This adds a simple histogram widget that visualizes the rgb-channels
and brightness for a given image. When hovering over the image it will
indicate what brightness level the pixel at the mouse position has.
A bloom filter creates fringes around bright areas in the image
mimicking the behavior of real-world cameras.
It gets its own category "Artistic" in the Filter Gallery since its not
one filter per se but a combination of multiple.
The filter works as follows:
- Get only the light areas (above a threshold) of the image
- Blur that image
- Compose onto the original image
The FastBoxBlurFilter has been living in LibGfx for a while and now
it's accessible in PixelPaint. The parameters for the filter are exposed
via the new Filter Gallery.
This patch adds the bare bones of the new Filter Gallery.
For now, only the gml and the basic layout got added, a fairly boringw
indow pops up when "Filter Gallery" is called.
The code for the Model used by the TreeView is taken in large parts from
HackStudio's VariableModel.
There's still a lot to be desired in terms of functionality and
usability, but this is a start. When using the clone tool, you
can press Alt to sample a location, and then the brush will clone
the color from there.
Depending on the size / scaling of the UI, someone might want to
change what the threshold is to show the pixel grid. For instance
if you are working on a 50x50 image, and want to see the grid while
still fitting the whole image in the editor.
Since there's no UI for settings in PixelPaint right now, this
commit just uses LibConfig to read the following entry:
("PixelPaint", "PixelGrid", "Threshold")
which is then used when drawing the grid.
Previously, all the UI setup was done in `main.cpp`, with a whole
bunch of lambdas,, and actions etc just being stored in the main
function. This is probably an artifact from back when it was first
created.
Most other applications now have a "MainWidget" class of some sort
which handles setting up all the UI/menubars, etc. More importantly,,
it also lets us handle application-wide events which we were
previously not able to do directly, since the main widget was just
a default GUI::Widget.
This patch moves all the core functionality of the PixelPaint
application into PixelPaint::MainWidget, which is then instantiated
by the main function. There is likely some more refactoring that
would help, but this commit is big enough as it is doing mostly
a direct port.
This new class will open and parse files (either images directly or .pp
project files) and one can get the parsed Image as well as other
information from it.
This patch removes a bunch of 'try_create_from..." methods from Image in
favor of using the ProjectLoader.
The only json_metadata that is available are Guides for now.
This patch adds the logic for the GuideTool. Pulling in from outside the
image creates a new Guide, moving a Guide outside of the image deletes
it and a Guide can be deleteted via the context menu.
A Guide is considered clicked when the cursor is less than 20 pixels
away from the line.
The Mask class represents an opacity mask over a rectangular section
of an image, linking every pixel to an alpha value ranging from 0 (not
selected) to 255 (fully selected). "Partially selected" pixels can be
used to simulate anti-aliased curves.
This class will be used as the basis for the new non-rectangular
selection feature.
