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Added support for background images on any window.

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This commit is contained in:
Joey Payne 2014-02-07 11:58:22 -07:00
commit 955a3db31f
4 changed files with 137 additions and 9 deletions
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4
featurelist.txt
View file

@ -1,13 +1,13 @@
- Draggable windows ✔
- Resizable windows ✔
- Text windows ✔
- Background images ✔
- Windows can calculate minimum size to fit children
- Anchors
- Anchor to left, center, right or top, middle, bottom
- Background images
- Drop shadows
- Gradients
- Independent border colors/sizes with joining corners
- Animations and Time delta
- Text windows
- XML export and import

6
jgui/settings.py
View file

@ -1 +1,5 @@
DEBUG=True
import os
DEBUG = True
PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
SCREENSHOT_DIR = os.path.join(PROJECT_ROOT, 'screenshots')

106
jgui/surface/surface.py
View file

@ -1,6 +1,7 @@
import cairo
import pango
import pangocairo as pc
import gtk
import math
from .structures import Size, Position, Rectangle, Color, BorderRadius, Padding
from ..events.events import WindowEventSource
@ -97,9 +98,23 @@ class WindowSurface(object):
font_map = pc.cairo_font_map_get_default()
font_list = [f.get_name() for f in font_map.list_families()]
filters = {'none': cairo.FILTER_FAST,
'good': cairo.FILTER_GOOD,
'best': cairo.FILTER_BEST,
'bilinear': cairo.FILTER_BILINEAR,
'gaussian': cairo.FILTER_GAUSSIAN,
'nearest' : cairo.FILTER_NEAREST}
def __init__(self):
super(WindowSurface, self).__init__()
def load_image(self, image_path):
if image_path is not None:
if isinstance(image_path, basestring):
return gtk.gdk.pixbuf_new_from_file(image_path)
else:
return image_path
def draw_circle(self, position, size, color=(1,1,1,1), line_width=1.0, line_color=(0,0,0,1), start_angle=0.0, end_angle=360.0):
color = Color.from_value(color)
line_color = Color.from_value(line_color)
@ -125,6 +140,69 @@ class WindowSurface(object):
context.set_source_rgba(*line_color)
context.stroke()
def draw_image(self, image, position, size,
filter='none', stretch=True,
keep_aspect=True, center_horizontal=True,
center_vertical=True, image_offset=(0, 0)):
context = self.context
position = Position.from_value(position)
offset = Position.from_value(image_offset)
size = Size.from_value(size)
width = size.width
height = size.height
x,y = (self.position.x+position.x,
self.position.y+position.y)
context.rectangle(x, y, width, height)
context.clip()
if isinstance(image, basestring):
image = self.load_image(image)
im_width = image.get_width()
im_height = image.get_height()
new_height = height
new_width = width
if keep_aspect:
aspect_ratio = min(im_width, im_height)/float(max(im_width, im_height))
if width >= height:
new_width = aspect_ratio * new_height
else:
new_height = aspect_ratio * new_width
if center_horizontal:
x += width/2.0 - new_width/2.0
if x < 0:
x = 0
if center_vertical:
y += height/2.0 - new_height/2.0
if y < 0:
y = 0
im_surf = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(new_width), int(new_height))
sp = cairo.SurfacePattern(im_surf)
ct2 = cairo.Context(im_surf)
ct2.set_source(sp)
ct3 = gtk.gdk.CairoContext(ct2)
if stretch:
ct3.scale(new_width/float(im_width), new_height/float(im_height))
ct3.set_source_pixbuf(image, -offset.x, -offset.y)
ct3.get_source().set_filter(self.filters[filter])
ct3.paint()
context.set_source_surface(im_surf,x,y)
context.paint()
def draw_text(self, text, position, font_size=12,
font_weight='normal',
font_style='normal', font_color=(0,0,0,1),
@ -300,6 +378,14 @@ class Window(WindowEventSource, WindowSurface):
self.border_width = kwargs.pop('border_width', 1)
self.border_color = Color.from_value(kwargs.pop('border_color', (0,0,0,0)))
self.background_color = Color.from_value(kwargs.pop('background_color', (0,0,0,0)))
self.background_image = self.load_image(kwargs.pop('background_image', None))
self.background_image_filter = kwargs.pop('background_image_filter','none')
self.background_image_stretch = kwargs.pop('background_image_stretch', True)
self.background_image_keep_ratio = kwargs.pop('background_image_keep_ratio', True)
self.background_image_center_horizontal = kwargs.pop('background_image_center_horizontal', True)
self.background_image_center_vertical = kwargs.pop('background_image_center_vertical', True)
self.background_image_offset = Position.from_value(kwargs.pop('background_image_offset', (0, 0)))
self.border_radius = BorderRadius.from_value(kwargs.pop('border_radius', 1))
self.padding = Padding.from_value(kwargs.pop('padding', 0))
self.dashed_border = kwargs.pop('dashed_border', False)
@ -337,6 +423,15 @@ class Window(WindowEventSource, WindowSurface):
line_dashed=self.dashed_border,
clip=self.clip_children)
if self.background_image is not None:
self.draw_image(self.background_image, [0, 0], self.size,
filter=self.background_image_filter,
stretch=self.background_image_stretch,
keep_aspect=self.background_image_keep_ratio,
center_horizontal=self.background_image_center_horizontal,
center_vertical=self.background_image_center_vertical,
image_offset=self.background_image_offset)
@property
def resizable(self):
return self._resizable
@ -901,3 +996,14 @@ class TextWindow(Window):
self.font_size, font_weight=self.font_weight,
font_style=self.font_style, font_family=self.font_family,
font_color=self.font_color, word_wrap=self.word_wrap)
class ImageWindow(Window):
def __init__(self, name, image_path, *args, **kwargs):
super(ImageWindow, self).__init__(name, *args, **kwargs)
self.image_path = image_path
self.image = self.load_image(self.image_path)
def render(self):
self.draw_image(self.image, [0,0], self.size)
super(ImageWindow, self).render()

30
testclasses.py
View file

@ -1,4 +1,4 @@
from jgui.surface import Surface, Window, Position, Size, Color, TextWindow
from jgui.surface import Surface, Window, Position, Size, Color, TextWindow, ImageWindow
import math
class TestSurface(Surface):
@ -16,12 +16,30 @@ class TestSurface(Surface):
border_color=(0,0,0),
background_color=(1,1,1),
clip_children=True,
ignore_debug=True)
my_win.add_child(TextWindow('text','Micro Bean is the best bean ever.', position=[20,20], size=[100, 50], resizable=True, clip_children=True, font_color=(1,0,1), padding=20, draggable=True))
ignore_debug=True,
background_image='/home/joey/Pictures/wrench.png',
background_image_filter='bilinear')
my_win.add_child(TextWindow('text','Micro Bean is the best bean ever.',
position=[20,20], size=[100, 50],
resizable=True, clip_children=True,
font_color=(1,0,1), padding=20,
draggable=True))
self.root_window.add_child(my_win)
self.root_window.add_child(TestWindow('child2', position=[200,200], size=[200,200], draggable=True))
child3 = TestWindow('child3', position=[300,300], size=[200,200], draggable=True)
child3.add_child(TestWindow('child3-1', position=[10,10], size=[50,50], draggable=True, resizable=True))
self.root_window.add_child(TestWindow('child2', position=[200,200],
size=[200,200], draggable=True))
self.root_window.add_child(ImageWindow('image', image_path='/home/joey/Pictures/wrench.png',
position=[0,200], size=[200,200],
draggable=True, resizable=True))
child3 = TestWindow('child3', position=[300,300],
size=[200,200], draggable=True)
child3.add_child(TestWindow('child3-1', position=[10,10],
size=[50,50], draggable=True,
resizable=True))
self.root_window.add_child(child3)