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from . bl_ui_widget import *
import blf
import bpy
class BL_UI_Button(BL_UI_Widget):
def __init__(self, x, y, width, height):
super().__init__(x, y, width, height)
self._text_color = (1.0, 1.0, 1.0, 1.0)
self._hover_bg_color = (0.5, 0.5, 0.5, 1.0)
self._select_bg_color = (0.7, 0.7, 0.7, 1.0)
self._text = "Button"
self._text_size = 16
self._textpos = (x, y)
self.__state = 0
self.__image = None
self.__image_size = (24, 24)
self.__image_position = (4, 2)
@property
def text_color(self):
return self._text_color
@text_color.setter
def text_color(self, value):
self._text_color = value
@property
def text(self):
return self._text
@text.setter
def text(self, value):
self._text = value
@property
def text_size(self):
return self._text_size
@text_size.setter
def text_size(self, value):
self._text_size = value
@property
def hover_bg_color(self):
return self._hover_bg_color
@hover_bg_color.setter
def hover_bg_color(self, value):
self._hover_bg_color = value
@property
def select_bg_color(self):
return self._select_bg_color
@select_bg_color.setter
def select_bg_color(self, value):
self._select_bg_color = value
def set_image_size(self, imgage_size):
self.__image_size = imgage_size
def set_image_position(self, image_position):
self.__image_position = image_position
def set_image(self, rel_filepath):
#first try to access the image, for cases where it can get removed
try:
self.__image
self.__image.filepath
self.__image.pixels
except:
self.__image = None
try:
if self.__image is None or self.__image.filepath != rel_filepath:
self.__image = bpy.data.images.load(rel_filepath, check_existing=True)
self.__image.gl_load()
if self.__image and len(self.__image.pixels) == 0:
self.__image.reload()
self.__image.gl_load()
except Exception as e:
self.__image = None
def update(self, x, y):
super().update(x, y)
self._textpos = [x, y]
def draw(self):
if not self._is_visible:
return
area_height = self.get_area_height()
self.shader.bind()
self.set_colors()
bgl.glEnable(bgl.GL_BLEND)
self.batch_panel.draw(self.shader)
self.draw_image()
bgl.glDisable(bgl.GL_BLEND)
# Draw text
self.draw_text(area_height)
def set_colors(self):
color = self._bg_color
text_color = self._text_color
# pressed
if self.__state == 1:
color = self._select_bg_color
# hover
elif self.__state == 2:
color = self._hover_bg_color
self.shader.uniform_float("color", color)
def draw_text(self, area_height):
font_id = 1
blf.size(font_id, self._text_size, 72)
size = blf.dimensions(0, self._text)
textpos_y = area_height - self._textpos[1] - (self.height + size[1]) / 2.0
blf.position(font_id, self._textpos[0] + (self.width - size[0]) / 2.0, textpos_y + 1, 0)
r, g, b, a = self._text_color
blf.color(font_id, r, g, b, a)
blf.draw(font_id, self._text)
def draw_image(self):
if self.__image is not None:
try:
y_screen_flip = self.get_area_height() - self.y_screen
off_x, off_y = self.__image_position
sx, sy = self.__image_size
# bottom left, top left, top right, bottom right
vertices = (
(self.x_screen + off_x, y_screen_flip - off_y),
(self.x_screen + off_x, y_screen_flip - sy - off_y),
(self.x_screen + off_x + sx, y_screen_flip - sy - off_y),
(self.x_screen + off_x + sx, y_screen_flip - off_y))
self.shader_img = gpu.shader.from_builtin('2D_IMAGE')
self.batch_img = batch_for_shader(self.shader_img, 'TRI_FAN',
{ "pos" : vertices,
"texCoord": ((0, 1), (0, 0), (1, 0), (1, 1))
},)
# send image to gpu if it isn't there already
if self.__image.gl_load():
raise Exception()
bgl.glActiveTexture(bgl.GL_TEXTURE0)
bgl.glBindTexture(bgl.GL_TEXTURE_2D, self.__image.bindcode)
self.shader_img.bind()
self.shader_img.uniform_int("image", 0)
self.batch_img.draw(self.shader_img)
return True
except:
pass
return False
def set_mouse_down(self, mouse_down_func):
self.mouse_down_func = mouse_down_func
def mouse_down(self, x, y):
if self.is_in_rect(x,y):
self.__state = 1
try:
self.mouse_down_func(self)
except Exception as e:
print(e)
return True
return False
def mouse_move(self, x, y):
if self.is_in_rect(x,y):
if(self.__state != 1):
# hover state
self.__state = 2
else:
self.__state = 0
def mouse_up(self, x, y):
if self.is_in_rect(x,y):
self.__state = 2
else:
self.__state = 0
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