[Dextrose] [PATCH Paint Activity] Added Invert Color Effect to Paint Activity (OLPC #2495)

Manusheel Gupta manu at seeta.in
Mon Oct 18 11:54:18 EDT 2010


Gonzalo,

Thank you for the feedback.

This mistake was identified in Ayush's patch. He has configured sugar-lint
and will run pep8 over the code.

I have also asked him to attach the patch at the ticket. Do you want him to
open a separate ticket at Sugarlabs bug tracker, and upload the patch over
there?

Regards,

Manu


On Mon, Oct 18, 2010 at 9:14 PM, Gonzalo Odiard <godiard at gmail.com> wrote:

> Ayush, please run pylint and pep8 over your code and attach to the ticket.
> Thanks.
>
> Gonzalo
>
>
>
> On Sat, Oct 16, 2010 at 7:10 PM, Ayush Goyal <ayush at seeta.in> wrote:
>
>>
>> Signed-off-by: Ayush Goyal <ayush at seeta.in>
>> ---
>>  Area.py                 |   40 +++++
>>  icons/invert-colors.svg |  387
>> +++++++++++++++++++++++++++++++++++++++++++++++
>>  toolbox.py              |   22 ++-
>>  3 files changed, 441 insertions(+), 8 deletions(-)
>>  create mode 100644 icons/invert-colors.svg
>>
>> diff --git a/Area.py b/Area.py
>> index 2dca7da..7c7f4c5 100644
>> --- a/Area.py
>> +++ b/Area.py
>> @@ -70,6 +70,7 @@ import pango
>>  from fill import *
>>  from Desenho import Desenho
>>  from urlparse import urlparse
>> +import numpy
>>
>>  ##Tools and events manipulation are handle with this class.
>>
>> @@ -833,6 +834,45 @@ class Area(gtk.DrawingArea):
>>         self.queue_draw()
>>         if not self.selmove:
>>             self.enableUndo(widget)
>> +
>> +    def invert_colors(self,widget):
>> +        """Apply invert color effect.
>> +
>> +            @param  self -- the Area object (GtkDrawingArea)
>> +            @param  widget -- the Area object (GtkDrawingArea)
>> +
>> +        """
>> +
>> +        width, height = self.window.get_size()
>> +
>> +        if self.selmove:
>> +            size = self.pixmap_sel.get_size()
>> +            pix =
>> gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,False,8,size[0],size[1])
>> +
>>  pix.get_from_drawable(self.pixmap_sel,gtk.gdk.colormap_get_system(),0,0,0,0,size[0],size[1])
>> +        else:
>> +            pix =
>> gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,False,8,width,height)
>> +
>>  pix.get_from_drawable(self.pixmap,gtk.gdk.colormap_get_system(),0,0,0,0,width,height)
>> +
>> +        pix_manip2=pix.get_pixels_array()
>> +        pix_manip=numpy.ones(pix_manip2.shape,dtype=numpy.uint8)*255
>> +        pix_manip2=pix_manip-pix_manip2
>> +
>>  pix=gtk.gdk.pixbuf_new_from_array(pix_manip2,gtk.gdk.COLORSPACE_RGB,8)
>> +
>> +
>> +        if self.selmove:
>> +
>>  self.pixmap_sel.draw_pixbuf(self.gc,pix,0,0,0,0,size[0],size[1],dither=gtk.gdk.RGB_DITHER_NORMAL,x_dither=0,y_dither=0)
>> +
>> +
>>  self.pixmap_temp.draw_drawable(self.gc,self.pixmap,0,0,0,0,width,height)
>> +
>>  self.pixmap_temp.draw_drawable(self.gc,self.pixmap_sel,0,0,self.orig_x,self.orig_y,size[0],size[1])
>> +
>>  self.pixmap_temp.draw_rectangle(self.gc_selection,False,self.orig_x,self.orig_y,size[0],size[1])
>> +
>>  self.pixmap_temp.draw_rectangle(self.gc_selection1,False,self.orig_x-1,self.orig_y-1,size[0]+2,size[1]+2)
>> +
>> +        else:
>> +
>>  self.pixmap.draw_pixbuf(self.gc,pix,0,0,0,0,width,height,dither=gtk.gdk.RGB_DITHER_NORMAL,x_dither=0,y_dither=0)
>> +
>> +        self.queue_draw()
>> +        if not self.selmove:
>> +            self.enableUndo(widget)
>>
>>     def _pixbuf2Image(self, pb):
>>         """change a pixbuf to RGB image
>> diff --git a/icons/invert-colors.svg b/icons/invert-colors.svg
>> new file mode 100644
>> index 0000000..373ca70
>> --- /dev/null
>> +++ b/icons/invert-colors.svg
>> @@ -0,0 +1,387 @@
>> +<?xml version="1.0" encoding="UTF-8" standalone="no"?>
>> +<svg
>> +   xmlns:osb="http://www.openswatchbook.org/uri/2009/osb"
>> +   xmlns:dc="http://purl.org/dc/elements/1.1/"
>> +   xmlns:cc="http://creativecommons.org/ns#"
>> +   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>> +   xmlns:svg="http://www.w3.org/2000/svg"
>> +   xmlns="http://www.w3.org/2000/svg"
>> +   xmlns:xlink="http://www.w3.org/1999/xlink"
>> +   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
>> +   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
>> +   enable-background="new 0 0 55 55"
>> +   height="55px"
>> +   version="1.1"
>> +   viewBox="0 0 55 55"
>> +   width="55px"
>> +   x="0px"
>> +   xml:space="preserve"
>> +   y="0px"
>> +   id="svg2"
>> +   inkscape:version="0.48.0 r9654"
>> +   sodipodi:docname="invert-colors.svg"><metadata
>> +     id="metadata50"><rdf:RDF><cc:Work
>> +         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
>> +           rdf:resource="http://purl.org/dc/dcmitype/StillImage"
>> /></cc:Work></rdf:RDF></metadata><defs
>> +     id="defs48"><inkscape:path-effect
>> +       effect="skeletal"
>> +       id="path-effect5822"
>> +       is_visible="true"
>> +       pattern="M 0,0 0,10 10,5 z"
>> +       copytype="single_stretched"
>> +       prop_scale="1"
>> +       scale_y_rel="false"
>> +       spacing="0"
>> +       normal_offset="0"
>> +       tang_offset="0"
>> +       prop_units="false"
>> +       vertical_pattern="false"
>> +       fuse_tolerance="0" /><inkscape:path-effect
>> +       effect="skeletal"
>> +       id="path-effect5818"
>> +       is_visible="true"
>> +       pattern="M 0,0 0,10 10,5 z"
>> +       copytype="single_stretched"
>> +       prop_scale="1"
>> +       scale_y_rel="false"
>> +       spacing="0"
>> +       normal_offset="0"
>> +       tang_offset="0"
>> +       prop_units="false"
>> +       vertical_pattern="false"
>> +       fuse_tolerance="0" /><linearGradient
>> +       id="linearGradient5788"
>> +       osb:paint="solid"><stop
>> +         style="stop-color:#000000;stop-opacity:1;"
>> +         offset="0"
>> +         id="stop5790" /></linearGradient><linearGradient
>> +
>> gradientTransform="matrix(-4.371139e-8,1,-1,-4.371139e-8,55,-4.882812e-4)"
>> +       gradientUnits="userSpaceOnUse"
>> +       id="SVGID_1_-0"
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>> +       x2="46.5"
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>> +       y2="27.5"><stop
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>> +
>> gradientTransform="matrix(-4.371139e-8,1,-1,-4.371139e-8,55,-4.882812e-4)"
>> +       gradientUnits="userSpaceOnUse"
>> +       id="SVGID_1_-0-1"
>> +       x1="8.4995003"
>> +       x2="46.5"
>> +       y1="27.5"
>> +       y2="27.5"><stop
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>> +         id="stop18-7-7" /><stop
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>> +         id="stop22-2-5" /><stop
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>> +         style="stop-color:#54E041"
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>> +         style="stop-color:#2FC47B"
>> +         id="stop36-9-7" /><stop
>> +         offset="0.8084"
>> +         style="stop-color:#00A0C6"
>> +         id="stop38-4-5" /><stop
>> +         offset="0.8916"
>> +         style="stop-color:#1C64CB"
>> +         id="stop40-9-3" /><stop
>> +         offset="1"
>> +         style="stop-color:#4210D2"
>> +         id="stop42-0-8" /></linearGradient><linearGradient
>> +       y2="27.5"
>> +       x2="46.5"
>> +       y1="27.5"
>> +       x1="8.4995003"
>> +
>> gradientTransform="matrix(-4.371139e-8,1,-1,-4.371139e-8,55,-4.882812e-4)"
>> +       gradientUnits="userSpaceOnUse"
>> +       id="linearGradient3454"
>> +       xlink:href="#SVGID_1_-0-1"
>> +       inkscape:collect="always" /><filter
>> +       id="filter3547"
>> +       inkscape:label="Invert"
>> +       x="0"
>> +       y="0"
>> +       width="1"
>> +       height="1"
>> +       inkscape:menu="Color"
>> +       inkscape:menu-tooltip="Invert colors"
>> +       color-interpolation-filters="sRGB"><feColorMatrix
>> +         id="feColorMatrix3549"
>> +         type="saturate"
>> +         values="1"
>> +         result="fbSourceGraphic" /><feColorMatrix
>> +         id="feColorMatrix3551"
>> +         in="fbSourceGraphic"
>> +         values="-1 0 0 0 1 0 -1 0 0 1 0 0 -1 0 1 0 0 0 1 0 "
>> /></filter></defs><sodipodi:namedview
>> +     pagecolor="#ffffff"
>> +     bordercolor="#666666"
>> +     borderopacity="1"
>> +     objecttolerance="10"
>> +     gridtolerance="10"
>> +     guidetolerance="10"
>> +     inkscape:pageopacity="0"
>> +     inkscape:pageshadow="2"
>> +     inkscape:window-width="1280"
>> +     inkscape:window-height="751"
>> +     id="namedview46"
>> +     showgrid="false"
>> +     inkscape:zoom="9.7454545"
>> +     inkscape:cx="8.7733208"
>> +     inkscape:cy="27.5"
>> +     inkscape:window-x="0"
>> +     inkscape:window-y="24"
>> +     inkscape:window-maximized="1"
>> +     inkscape:current-layer="svg2" /><g
>> +     transform="matrix(0.3848602,0,0,0.3848602,7.5641324,7.5767221)"
>> +     style="display:block"
>> +     display="block"
>> +     id="effect-rainbow-9"><linearGradient
>> +
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>> +       height="38"
>> +       width="38"
>> +       x="8.5"
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>> +     transform="matrix(0.3848602,0,0,0.3848602,26.242514,26.259729)"
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>> +     display="block"
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>> +
>> style="fill:#ffffff;fill-opacity:1;stroke:#ffffff;stroke-width:2.011;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:5.30000019;stroke-opacity:1;stroke-dasharray:none"
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>> -0.783268,1.678014 -0.856517,-1.67529 0.553319,-0.01848 -0.108147,-7.746052
>> -8.70531,0 z"
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>> +
>> style="fill:#000000;fill-opacity:1;stroke:#ffffff;stroke-width:2.011;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
>> +     d="m 25.355629,39.092534 -9.395759,0 0,-8.300232 -0.538129,0
>> 0.783268,-1.678013 0.856517,1.675289 -0.553319,0.01848 0.108147,7.746052
>> 8.70531,0 z"
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>> \ No newline at end of file
>> diff --git a/toolbox.py b/toolbox.py
>> index 299181b..0c3105c 100644
>> --- a/toolbox.py
>> +++ b/toolbox.py
>> @@ -1230,6 +1230,8 @@ class ImageToolbar(gtk.Toolbar):
>>  class EffectsToolbar(gtk.Toolbar):
>>
>>     _EFFECT_GRAYSCALE = 'grayscale'
>> +    _INVERT_COLOR = 'invert-colors'
>> +
>>     # Rainbow acts as a tool in Area, and it has to be described as a dict
>>     _EFFECT_RAINBOW = {
>>         'name'          : 'rainbow',
>> @@ -1256,10 +1258,16 @@ class EffectsToolbar(gtk.Toolbar):
>>         self._effect_rainbow =
>> DrawToolButton('effect-rainbow',activity.tool_group,_('Rainbow'))
>>         self.insert(self._effect_rainbow, -1)
>>         self._configure_palette(self._effect_rainbow,
>> self._EFFECT_RAINBOW)
>> -
>> +
>> +
>>         separator = gtk.SeparatorToolItem()
>>         self.insert(separator, -1)
>>
>> +        self._invert_colors = ToolButton('invert-colors')
>> +        self.insert(self._invert_colors, -1)
>> +        self._invert_colors.show()
>> +        self._invert_colors.set_tooltip(_('Invert Colors'))
>> +
>>         """
>>         #FIXME: Must be implemented
>>         self._black_and_white = ToolButton('black_and_white')
>> @@ -1267,16 +1275,11 @@ class EffectsToolbar(gtk.Toolbar):
>>         self._black_and_white.show()
>>         self._black_and_white.connect('clicked', test_connect, activity,
>> 'effect-black-and-white')
>>         self._black_and_white.set_tooltip(_('Black and White'))
>> -
>> -        self._invert_colors = ToolButton('invert_colors')
>> -        self.insert(self._invert_colors, -1)
>> -        self._invert_colors.show()
>> -        self._invert_colors.connect('clicked', test_connect, activity,
>> 'invert-colors')
>> -        self._invert_colors.set_tooltip(_('Invert Colors'))
>> -
>>         """
>> +
>>         self._effect_grayscale.connect('clicked', self.grayscale)
>>         self._effect_rainbow.connect('clicked', self.rainbow)
>> +        self._invert_colors.connect('clicked', self.invert_colors)
>>
>>     ##Make the colors be in grayscale
>>     def grayscale(self, widget):
>> @@ -1285,6 +1288,9 @@ class EffectsToolbar(gtk.Toolbar):
>>     ##Like the brush, but change it color when painting
>>     def rainbow(self, widget):
>>         self._activity.area.set_tool(self._EFFECT_RAINBOW)
>> +
>> +    def invert_colors(self,widget):
>> +        self._activity.area.invert_colors(widget)
>>
>>         # setting cursor: moved to Area
>>
>> --
>> 1.7.1
>>
>>
>
>
> --
> Gonzalo Odiard
>
>
>
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