1# SchedGui.py - Python extension for perf script, basic GUI code for
2#		traces drawing and overview.
3#
4# Copyright (C) 2010 by Frederic Weisbecker <fweisbec@gmail.com>
5#
6# This software is distributed under the terms of the GNU General
7# Public License ("GPL") version 2 as published by the Free Software
8# Foundation.
9
10
11try:
12	import wx
13except ImportError:
14	raise ImportError, "You need to install the wxpython lib for this script"
15
16
17class RootFrame(wx.Frame):
18	Y_OFFSET = 100
19	RECT_HEIGHT = 100
20	RECT_SPACE = 50
21	EVENT_MARKING_WIDTH = 5
22
23	def __init__(self, sched_tracer, title, parent = None, id = -1):
24		wx.Frame.__init__(self, parent, id, title)
25
26		(self.screen_width, self.screen_height) = wx.GetDisplaySize()
27		self.screen_width -= 10
28		self.screen_height -= 10
29		self.zoom = 0.5
30		self.scroll_scale = 20
31		self.sched_tracer = sched_tracer
32		self.sched_tracer.set_root_win(self)
33		(self.ts_start, self.ts_end) = sched_tracer.interval()
34		self.update_width_virtual()
35		self.nr_rects = sched_tracer.nr_rectangles() + 1
36		self.height_virtual = RootFrame.Y_OFFSET + (self.nr_rects * (RootFrame.RECT_HEIGHT + RootFrame.RECT_SPACE))
37
38		# whole window panel
39		self.panel = wx.Panel(self, size=(self.screen_width, self.screen_height))
40
41		# scrollable container
42		self.scroll = wx.ScrolledWindow(self.panel)
43		self.scroll.SetScrollbars(self.scroll_scale, self.scroll_scale, self.width_virtual / self.scroll_scale, self.height_virtual / self.scroll_scale)
44		self.scroll.EnableScrolling(True, True)
45		self.scroll.SetFocus()
46
47		# scrollable drawing area
48		self.scroll_panel = wx.Panel(self.scroll, size=(self.screen_width - 15, self.screen_height / 2))
49		self.scroll_panel.Bind(wx.EVT_PAINT, self.on_paint)
50		self.scroll_panel.Bind(wx.EVT_KEY_DOWN, self.on_key_press)
51		self.scroll_panel.Bind(wx.EVT_LEFT_DOWN, self.on_mouse_down)
52		self.scroll.Bind(wx.EVT_PAINT, self.on_paint)
53		self.scroll.Bind(wx.EVT_KEY_DOWN, self.on_key_press)
54		self.scroll.Bind(wx.EVT_LEFT_DOWN, self.on_mouse_down)
55
56		self.scroll.Fit()
57		self.Fit()
58
59		self.scroll_panel.SetDimensions(-1, -1, self.width_virtual, self.height_virtual, wx.SIZE_USE_EXISTING)
60
61		self.txt = None
62
63		self.Show(True)
64
65	def us_to_px(self, val):
66		return val / (10 ** 3) * self.zoom
67
68	def px_to_us(self, val):
69		return (val / self.zoom) * (10 ** 3)
70
71	def scroll_start(self):
72		(x, y) = self.scroll.GetViewStart()
73		return (x * self.scroll_scale, y * self.scroll_scale)
74
75	def scroll_start_us(self):
76		(x, y) = self.scroll_start()
77		return self.px_to_us(x)
78
79	def paint_rectangle_zone(self, nr, color, top_color, start, end):
80		offset_px = self.us_to_px(start - self.ts_start)
81		width_px = self.us_to_px(end - self.ts_start)
82
83		offset_py = RootFrame.Y_OFFSET + (nr * (RootFrame.RECT_HEIGHT + RootFrame.RECT_SPACE))
84		width_py = RootFrame.RECT_HEIGHT
85
86		dc = self.dc
87
88		if top_color is not None:
89			(r, g, b) = top_color
90			top_color = wx.Colour(r, g, b)
91			brush = wx.Brush(top_color, wx.SOLID)
92			dc.SetBrush(brush)
93			dc.DrawRectangle(offset_px, offset_py, width_px, RootFrame.EVENT_MARKING_WIDTH)
94			width_py -= RootFrame.EVENT_MARKING_WIDTH
95			offset_py += RootFrame.EVENT_MARKING_WIDTH
96
97		(r ,g, b) = color
98		color = wx.Colour(r, g, b)
99		brush = wx.Brush(color, wx.SOLID)
100		dc.SetBrush(brush)
101		dc.DrawRectangle(offset_px, offset_py, width_px, width_py)
102
103	def update_rectangles(self, dc, start, end):
104		start += self.ts_start
105		end += self.ts_start
106		self.sched_tracer.fill_zone(start, end)
107
108	def on_paint(self, event):
109		dc = wx.PaintDC(self.scroll_panel)
110		self.dc = dc
111
112		width = min(self.width_virtual, self.screen_width)
113		(x, y) = self.scroll_start()
114		start = self.px_to_us(x)
115		end = self.px_to_us(x + width)
116		self.update_rectangles(dc, start, end)
117
118	def rect_from_ypixel(self, y):
119		y -= RootFrame.Y_OFFSET
120		rect = y / (RootFrame.RECT_HEIGHT + RootFrame.RECT_SPACE)
121		height = y % (RootFrame.RECT_HEIGHT + RootFrame.RECT_SPACE)
122
123		if rect < 0 or rect > self.nr_rects - 1 or height > RootFrame.RECT_HEIGHT:
124			return -1
125
126		return rect
127
128	def update_summary(self, txt):
129		if self.txt:
130			self.txt.Destroy()
131		self.txt = wx.StaticText(self.panel, -1, txt, (0, (self.screen_height / 2) + 50))
132
133
134	def on_mouse_down(self, event):
135		(x, y) = event.GetPositionTuple()
136		rect = self.rect_from_ypixel(y)
137		if rect == -1:
138			return
139
140		t = self.px_to_us(x) + self.ts_start
141
142		self.sched_tracer.mouse_down(rect, t)
143
144
145	def update_width_virtual(self):
146		self.width_virtual = self.us_to_px(self.ts_end - self.ts_start)
147
148	def __zoom(self, x):
149		self.update_width_virtual()
150		(xpos, ypos) = self.scroll.GetViewStart()
151		xpos = self.us_to_px(x) / self.scroll_scale
152		self.scroll.SetScrollbars(self.scroll_scale, self.scroll_scale, self.width_virtual / self.scroll_scale, self.height_virtual / self.scroll_scale, xpos, ypos)
153		self.Refresh()
154
155	def zoom_in(self):
156		x = self.scroll_start_us()
157		self.zoom *= 2
158		self.__zoom(x)
159
160	def zoom_out(self):
161		x = self.scroll_start_us()
162		self.zoom /= 2
163		self.__zoom(x)
164
165
166	def on_key_press(self, event):
167		key = event.GetRawKeyCode()
168		if key == ord("+"):
169			self.zoom_in()
170			return
171		if key == ord("-"):
172			self.zoom_out()
173			return
174
175		key = event.GetKeyCode()
176		(x, y) = self.scroll.GetViewStart()
177		if key == wx.WXK_RIGHT:
178			self.scroll.Scroll(x + 1, y)
179		elif key == wx.WXK_LEFT:
180			self.scroll.Scroll(x - 1, y)
181		elif key == wx.WXK_DOWN:
182			self.scroll.Scroll(x, y + 1)
183		elif key == wx.WXK_UP:
184			self.scroll.Scroll(x, y - 1)
185