diff options
Diffstat (limited to 'scripts/pybootchartgui/pybootchartgui/gui.py')
| -rw-r--r-- | scripts/pybootchartgui/pybootchartgui/gui.py | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/scripts/pybootchartgui/pybootchartgui/gui.py b/scripts/pybootchartgui/pybootchartgui/gui.py new file mode 100644 index 0000000000..87081e30eb --- /dev/null +++ b/scripts/pybootchartgui/pybootchartgui/gui.py @@ -0,0 +1,273 @@ +import gobject +import gtk +import gtk.gdk +import gtk.keysyms + +import draw + +class PyBootchartWidget(gtk.DrawingArea): + __gsignals__ = { + 'expose-event': 'override', + 'clicked' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_STRING, gtk.gdk.Event)), + 'position-changed' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_INT, gobject.TYPE_INT)), + 'set-scroll-adjustments' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gtk.Adjustment, gtk.Adjustment)) + } + + def __init__(self, res): + gtk.DrawingArea.__init__(self) + + self.res = res + + self.set_flags(gtk.CAN_FOCUS) + + self.add_events(gtk.gdk.BUTTON_PRESS_MASK | gtk.gdk.BUTTON_RELEASE_MASK) + self.connect("button-press-event", self.on_area_button_press) + self.connect("button-release-event", self.on_area_button_release) + self.add_events(gtk.gdk.POINTER_MOTION_MASK | gtk.gdk.POINTER_MOTION_HINT_MASK | gtk.gdk.BUTTON_RELEASE_MASK) + self.connect("motion-notify-event", self.on_area_motion_notify) + self.connect("scroll-event", self.on_area_scroll_event) + self.connect('key-press-event', self.on_key_press_event) + + self.connect('set-scroll-adjustments', self.on_set_scroll_adjustments) + self.connect("size-allocate", self.on_allocation_size_changed) + self.connect("position-changed", self.on_position_changed) + + self.zoom_ratio = 1.0 + self.x, self.y = 0.0, 0.0 + + self.chart_width, self.chart_height = draw.extents(*res) + self.hadj = None + self.vadj = None + + def do_expose_event(self, event): + cr = self.window.cairo_create() + + # set a clip region for the expose event + cr.rectangle( + event.area.x, event.area.y, + event.area.width, event.area.height + ) + cr.clip() + self.draw(cr, self.get_allocation()) + return False + + def draw(self, cr, rect): + cr.set_source_rgba(1.0, 1.0, 1.0, 1.0) + cr.paint() + cr.scale(self.zoom_ratio, self.zoom_ratio) + cr.translate(-self.x, -self.y) + draw.render(cr, *self.res) + + def position_changed(self): + self.emit("position-changed", self.x, self.y) + + ZOOM_INCREMENT = 1.25 + + def zoom_image(self, zoom_ratio): + self.zoom_ratio = zoom_ratio + self._set_scroll_adjustments(self.hadj, self.vadj) + self.queue_draw() + + def zoom_to_rect(self, rect): + zoom_ratio = float(rect.width)/float(self.chart_width) + self.zoom_image(zoom_ratio) + self.x = 0 + self.position_changed() + + def on_zoom_in(self, action): + self.zoom_image(self.zoom_ratio * self.ZOOM_INCREMENT) + + def on_zoom_out(self, action): + self.zoom_image(self.zoom_ratio / self.ZOOM_INCREMENT) + + def on_zoom_fit(self, action): + self.zoom_to_rect(self.get_allocation()) + + def on_zoom_100(self, action): + self.zoom_image(1.0) + + POS_INCREMENT = 100 + + def on_key_press_event(self, widget, event): + if event.keyval == gtk.keysyms.Left: + self.x -= self.POS_INCREMENT/self.zoom_ratio + elif event.keyval == gtk.keysyms.Right: + self.x += self.POS_INCREMENT/self.zoom_ratio + elif event.keyval == gtk.keysyms.Up: + self.y -= self.POS_INCREMENT/self.zoom_ratio + elif event.keyval == gtk.keysyms.Down: + self.y += self.POS_INCREMENT/self.zoom_ratio + elif event.keyval == gtk.keysyms.Page_Up: + self.zoom_image(self.zoom_ratio * self.ZOOM_INCREMENT) + elif event.keyval == gtk.keysyms.Page_Down: + self.zoom_image(self.zoom_ratio / self.ZOOM_INCREMENT) + else: + return False + self.queue_draw() + self.position_changed() + return True + + def on_area_button_press(self, area, event): + if event.button == 2 or event.button == 1: + area.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.FLEUR)) + self.prevmousex = event.x + self.prevmousey = event.y + if event.type not in (gtk.gdk.BUTTON_PRESS, gtk.gdk.BUTTON_RELEASE): + return False + return False + + def on_area_button_release(self, area, event): + if event.button == 2 or event.button == 1: + area.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.ARROW)) + self.prevmousex = None + self.prevmousey = None + return True + return False + + def on_area_scroll_event(self, area, event): + if event.direction == gtk.gdk.SCROLL_UP: + self.zoom_image(self.zoom_ratio * self.ZOOM_INCREMENT) + return True + if event.direction == gtk.gdk.SCROLL_DOWN: + self.zoom_image(self.zoom_ratio / self.ZOOM_INCREMENT) + return True + return False + + def on_area_motion_notify(self, area, event): + state = event.state + if state & gtk.gdk.BUTTON2_MASK or state & gtk.gdk.BUTTON1_MASK: + x, y = int(event.x), int(event.y) + # pan the image + self.x += (self.prevmousex - x)/self.zoom_ratio + self.y += (self.prevmousey - y)/self.zoom_ratio + self.queue_draw() + self.prevmousex = x + self.prevmousey = y + self.position_changed() + return True + + def on_set_scroll_adjustments(self, area, hadj, vadj): + self._set_scroll_adjustments(hadj, vadj) + + def on_allocation_size_changed(self, widget, allocation): + self.hadj.page_size = allocation.width + self.hadj.page_increment = allocation.width * 0.9 + self.vadj.page_size = allocation.height + self.vadj.page_increment = allocation.height * 0.9 + + def _set_scroll_adjustments(self, hadj, vadj): + if hadj == None: + hadj = gtk.Adjustment(0.0, 0.0, 0.0, 0.0, 0.0, 0.0) + if vadj == None: + vadj = gtk.Adjustment(0.0, 0.0, 0.0, 0.0, 0.0, 0.0) + + if self.hadj != None and hadj != self.hadj: + self.hadj.disconnect(self.hadj_changed_signal_id) + if self.vadj != None and vadj != self.vadj: + self.vadj.disconnect(self.vadj_changed_signal_id) + + if hadj != None: + self.hadj = hadj + self._set_adj_upper(self.hadj, self.zoom_ratio * self.chart_width) + self.hadj_changed_signal_id = self.hadj.connect('value-changed', self.on_adjustments_changed) + + if vadj != None: + self.vadj = vadj + self._set_adj_upper(self.vadj, self.zoom_ratio * self.chart_height) + self.vadj_changed_signal_id = self.vadj.connect('value-changed', self.on_adjustments_changed) + + def _set_adj_upper(self, adj, upper): + changed = False + value_changed = False + + if adj.upper != upper: + adj.upper = upper + changed = True + + max_value = max(0.0, upper - adj.page_size) + if adj.value > max_value: + adj.value = max_value + value_changed = True + + if changed: + adj.changed() + if value_changed: + adj.value_changed() + + def on_adjustments_changed(self, adj): + self.x = self.hadj.value / self.zoom_ratio + self.y = self.vadj.value / self.zoom_ratio + self.queue_draw() + + def on_position_changed(self, widget, x, y): + self.hadj.value = x * self.zoom_ratio + self.vadj.value = y * self.zoom_ratio + +PyBootchartWidget.set_set_scroll_adjustments_signal('set-scroll-adjustments') + +class PyBootchartWindow(gtk.Window): + + ui = ''' + <ui> + <toolbar name="ToolBar"> + <toolitem action="ZoomIn"/> + <toolitem action="ZoomOut"/> + <toolitem action="ZoomFit"/> + <toolitem action="Zoom100"/> + </toolbar> + </ui> + ''' + + def __init__(self, res): + gtk.Window.__init__(self) + + window = self + window.set_title('Bootchart') + window.set_default_size(512, 512) + vbox = gtk.VBox() + window.add(vbox) + + self.widget = PyBootchartWidget(res) + + # Create a UIManager instance + uimanager = self.uimanager = gtk.UIManager() + + # Add the accelerator group to the toplevel window + accelgroup = uimanager.get_accel_group() + window.add_accel_group(accelgroup) + + # Create an ActionGroup + actiongroup = gtk.ActionGroup('Actions') + self.actiongroup = actiongroup + + # Create actions + actiongroup.add_actions(( + ('ZoomIn', gtk.STOCK_ZOOM_IN, None, None, None, self.widget.on_zoom_in), + ('ZoomOut', gtk.STOCK_ZOOM_OUT, None, None, None, self.widget.on_zoom_out), + ('ZoomFit', gtk.STOCK_ZOOM_FIT, 'Fit Width', None, None, self.widget.on_zoom_fit), + ('Zoom100', gtk.STOCK_ZOOM_100, None, None, None, self.widget.on_zoom_100), + )) + + # Add the actiongroup to the uimanager + uimanager.insert_action_group(actiongroup, 0) + + # Add a UI description + uimanager.add_ui_from_string(self.ui) + + # Scrolled window + scrolled = gtk.ScrolledWindow() + scrolled.add(self.widget) + + # Create a Toolbar + toolbar = uimanager.get_widget('/ToolBar') + vbox.pack_start(toolbar, False) + vbox.pack_start(scrolled) + + self.set_focus(self.widget) + + self.show_all() + +def show(res): + win = PyBootchartWindow(res) + win.connect('destroy', gtk.main_quit) + gtk.main() |