From 6eb30b09566a53ef510532f2a1705d7fc22985a8 Mon Sep 17 00:00:00 2001
From: Tony Anderson <tony_anderson@usa.net>
Date: Mon, 22 Jun 2009 14:04:24 +0000
Subject: initial commit

---
(limited to 'pgu/gui/area.py')

diff --git a/pgu/gui/area.py b/pgu/gui/area.py
new file mode 100644
index 0000000..39b8cbd
--- /dev/null
+++ b/pgu/gui/area.py
@@ -0,0 +1,434 @@
+"""
+"""
+import os
+
+import pguglobals
+from const import *
+import surface
+import container, table
+import group
+import basic, button, slider
+
+class SlideBox(container.Container):
+    """A scrollable area with no scrollbars.
+    
+    <pre>SlideBox(widget,width,height)</pre>
+    
+    <dl>
+    <dt>widget<dd>widget to be able to scroll around
+    <dt>width, height<dd>size of scrollable area
+    </dl>
+    
+    <strong>Example</strong>
+    <code>
+    c = SlideBox(w,100,100)
+    c.offset = (10,10)
+    c.repaint()
+    </code>
+    
+    """
+    
+    def __init__(self, widget, width, height, **params):
+        params.setdefault('width', width)
+        params.setdefault('height', height)
+        container.Container.__init__(self, **params)
+        self.offset = [0, 0]
+        self.widget = widget
+        
+    def __setattr__(self,k,v):
+        if k == 'widget':
+            if hasattr(self,'widget'):
+                self.remove(self.widget)
+            self.add(v,0,0)
+        self.__dict__[k] = v
+            
+    
+    def paint(self, s):
+        #if not hasattr(self,'surface'):
+        self.surface = pygame.Surface((self.max_rect.w,self.max_rect.h),0,s)
+        #self.surface.fill((0,0,0,0))
+        pguglobals.app.theme.render(self.surface,self.style.background,pygame.Rect(0,0,self.max_rect.w,self.max_rect.h))
+        self.bkgr = pygame.Surface((s.get_width(),s.get_height()),0,s)
+        self.bkgr.blit(s,(0,0))
+        container.Container.paint(self,self.surface)
+        s.blit(self.surface,(-self.offset[0],-self.offset[1]))
+        self._offset = self.offset[:]
+        return
+        
+    def paint_for_when_pygame_supports_other_tricks(self,s): 
+        #this would be ideal if pygame had support for it!
+        #and if pgu also had a paint(self,s,rect) method to paint small parts
+        sr = (self.offset[0],self.offset[1],self.max_rect.w,self.max_rect.h)
+        cr = (-self.offset[0],-self.offset[1],s.get_width(),s.get_height())
+        s2 = s.subsurface(sr)
+        s2.set_clip(cr)
+        container.Container.paint(self,s2)
+        
+    def proxy_paint(self, s):
+        container.Container.paint(self, surface.ProxySurface(parent=None, 
+                                           rect=self.max_rect,
+                                           real_surface=s,
+                                           offset=self.offset))
+    def update(self, s):
+        rects = container.Container.update(self,self.surface)
+        
+        rets = []
+        s_rect = pygame.Rect(0,0,s.get_width(),s.get_height())
+        
+        if self.offset == self._offset:
+            for r in rects:
+                r2 = r.move((-self.offset[0],-self.offset[1]))
+                if r2.colliderect(s_rect):
+                    s.blit(self.surface.subsurface(r),r2)
+                    rets.append(r2)
+        else:
+            s.blit(self.bkgr,(0,0))
+            sub = pygame.Rect(self.offset[0],self.offset[1],min(s.get_width(),self.max_rect.w-self.offset[0]),min(s.get_height(),self.max_rect.h-self.offset[1]))
+#             print sub
+#             print self.surface.get_width(),self.surface.get_height()
+#             print s.get_width(),s.get_height()
+#             print self.offset
+#             print self.style.width,self.style.height
+            s.blit(self.surface.subsurface(sub),(0,0))
+            rets.append(s_rect)
+        self._offset = self.offset[:]
+        return rets
+        
+    def proxy_update(self, s):
+        rects = container.Container.update(self, surface.ProxySurface(parent=None, 
+                                                    rect=self.max_rect,
+                                                    real_surface=s,
+                                                    offset=self.offset))
+        result = []
+        for r in rects: result.append(pygame.Rect(r).move(self.offset))
+        return result
+        
+    def resize(self, width=None, height=None):
+        container.Container.resize(self)
+        self.max_rect = pygame.Rect(self.widget.rect)
+        #self.max_rect.w = max(self.max_rect.w,self.style.width)
+        #self.max_rect.h = max(self.max_rect.h,self.style.height)
+        return self.style.width,self.style.height
+        #self.rect = pygame.Rect(self.rect[0], self.rect[1], self.style.width, self.style.height)
+    
+    def event(self, e):
+        if e.type in [MOUSEBUTTONDOWN, MOUSEBUTTONUP, MOUSEMOTION]:
+            pos = (e.pos[0] + self.offset[0], e.pos[1] + self.offset[1])
+            if self.max_rect.collidepoint(pos):
+                e_params = {'pos': pos }
+                if e.type == MOUSEMOTION: 
+                    e_params['buttons'] = e.buttons
+                    e_params['rel'] = e.rel
+                else:
+                    e_params['button'] = e.button
+                e = pygame.event.Event(e.type, e_params)
+        container.Container.event(self, e)
+
+#class SlideBox(Area):
+#    def __init__(self,*args,**params):
+#        print 'gui.SlideBox','Scheduled to be renamed to Area.'
+#        Area.__init__(self,*args,**params)
+    
+class ScrollArea(table.Table):
+    """A scrollable area with scrollbars.
+    
+    <pre>ScrollArea(widget,width,height,hscrollbar=True)</pre>
+    
+    <dl>
+    <dt>widget<dd>widget to be able to scroll around
+    <dt>width, height<dd>size of scrollable area.  Set either to 0 to default to size of widget.
+    <dt>hscrollbar<dd>set to False if you do not wish to have a horizontal scrollbar
+    <dt>vscrollbar<dd>set to False if you do not wish to have a vertical scrollbar
+    <dt>step<dd>set to how far clicks on the icons will step 
+    </dl>
+    """
+    def __init__(self, widget, width=0, height=0, hscrollbar=True, vscrollbar=True,step=24, **params):
+        w= widget
+        params.setdefault('cls', 'scrollarea')
+        table.Table.__init__(self, width=width,height=height,**params)
+        
+        self.sbox = SlideBox(w, width=width, height=height, cls=self.cls+".content")
+        self.widget = w
+        self.vscrollbar = vscrollbar
+        self.hscrollbar = hscrollbar
+        
+        self.step = step
+    
+    def __setattr__(self,k,v):
+        if k == 'widget':
+            self.sbox.widget = v
+        self.__dict__[k] = v
+
+    def resize(self,width=None,height=None):
+        widget = self.widget
+        box = self.sbox
+        
+        #self.clear()
+        table.Table.clear(self)
+        #print 'resize',self,self._rows
+        
+        self.tr()
+        self.td(box)
+        
+        widget.rect.w, widget.rect.h = widget.resize()
+        my_width,my_height = self.style.width,self.style.height
+        if not my_width:
+            my_width = widget.rect.w
+            self.hscrollbar = False
+        if not my_height:
+            my_height = widget.rect.h
+            self.vscrollbar = False
+        
+        box.style.width,box.style.height = my_width,my_height #self.style.width,self.style.height
+        
+        box.rect.w,box.rect.h = box.resize()
+        
+        #print widget.rect
+        #print box.rect
+        #r = table.Table.resize(self,width,height)
+        #print r
+        #return r
+        
+        #print box.offset
+        
+#         #this old code automatically adds in a scrollbar if needed
+#         #but it doesn't always work
+#         self.vscrollbar = None
+#         if widget.rect.h > box.rect.h:
+#             self.vscrollbar = slider.VScrollBar(box.offset[1],0, 65535, 0,step=self.step) 
+#             self.td(self.vscrollbar)
+#             self.vscrollbar.connect(CHANGE, self._vscrollbar_changed, None)
+#             
+#             vs = self.vscrollbar
+#             vs.rect.w,vs.rect.h = vs.resize()
+#             box.style.width = self.style.width - vs.rect.w
+#             
+#             
+#         self.hscrollbar = None
+#         if widget.rect.w > box.rect.w:
+#             self.hscrollbar = slider.HScrollBar(box.offset[0], 0,65535, 0,step=self.step)
+#             self.hscrollbar.connect(CHANGE, self._hscrollbar_changed, None)
+#             self.tr()
+#             self.td(self.hscrollbar)
+#             
+#             hs = self.hscrollbar
+#             hs.rect.w,hs.rect.h = hs.resize()
+#             box.style.height = self.style.height - hs.rect.h
+
+        xt,xr,xb,xl  = pguglobals.app.theme.getspacing(box)
+        
+
+        if self.vscrollbar:
+            self.vscrollbar = slider.VScrollBar(box.offset[1],0, 65535, 0,step=self.step) 
+            self.td(self.vscrollbar)
+            self.vscrollbar.connect(CHANGE, self._vscrollbar_changed, None)
+            
+            vs = self.vscrollbar
+            vs.rect.w,vs.rect.h = vs.resize()
+            if self.style.width:
+                box.style.width = self.style.width - (vs.rect.w + xl+xr)
+
+        if self.hscrollbar:
+            self.hscrollbar = slider.HScrollBar(box.offset[0], 0,65535, 0,step=self.step)
+            self.hscrollbar.connect(CHANGE, self._hscrollbar_changed, None)
+            self.tr()
+            self.td(self.hscrollbar)
+            
+            hs = self.hscrollbar
+            hs.rect.w,hs.rect.h = hs.resize()
+            if self.style.height:
+                box.style.height = self.style.height - (hs.rect.h + xt + xb)
+            
+        if self.hscrollbar:
+            hs = self.hscrollbar
+            hs.min = 0
+            hs.max = widget.rect.w - box.style.width
+            hs.style.width = box.style.width
+            hs.size = hs.style.width * box.style.width / max(1,widget.rect.w)
+        else:
+            box.offset[0] = 0
+            
+        if self.vscrollbar:
+            vs = self.vscrollbar
+            vs.min = 0
+            vs.max = widget.rect.h - box.style.height
+            vs.style.height = box.style.height
+            vs.size = vs.style.height * box.style.height / max(1,widget.rect.h)
+        else:
+            box.offset[1] = 0
+            
+        #print self.style.width,box.style.width, hs.style.width
+            
+        r = table.Table.resize(self,width,height)
+        return r
+    
+    def x_resize(self, width=None, height=None):
+        w,h = table.Table.resize(self, width, height)
+        if self.hscrollbar:
+            if self.widget.rect.w <= self.sbox.rect.w:
+                self.hscrollbar.size = self.hscrollbar.style.width
+            else:
+                self.hscrollbar.size = max(20,self.hscrollbar.style.width * self.sbox.rect.w / self.widget.rect.w)
+            self._hscrollbar_changed(None)
+        if self.widget.rect.h <= self.sbox.rect.h: 
+            self.vscrollbar.size = self.vscrollbar.style.height
+        else:
+            self.vscrollbar.size = max(20,self.vscrollbar.style.height * self.sbox.rect.h / self.widget.rect.h)
+        self._vscrollbar_changed(None)
+        return w,h
+
+    def _vscrollbar_changed(self, xxx):
+        #y = (self.widget.rect.h - self.sbox.rect.h) * self.vscrollbar.value / 1000
+        #if y >= 0: self.sbox.offset[1] = -y
+        self.sbox.offset[1] = self.vscrollbar.value
+        self.sbox.reupdate()
+
+    def _hscrollbar_changed(self, xxx):
+        #x = (self.widget.rect.w - self.sbox.rect.w) * self.hscrollbar.value / 1000
+        #if x >= 0: self.sbox.offset[0] = -x
+        self.sbox.offset[0] = self.hscrollbar.value
+        self.sbox.reupdate()
+
+
+    def set_vertical_scroll(self, percents): 
+        #if not self.vscrollbar: return
+        if not hasattr(self.vscrollbar,'value'): return
+        self.vscrollbar.value = percents #min(max(percents*10, 0), 1000)
+        self._vscrollbar_changed(None)
+
+    def set_horizontal_scroll(self, percents): 
+        #if not self.hscrollbar: return
+        if not hasattr(self.hscrollbar,'value'): return
+        self.hscrollbar.value = percents #min(max(percents*10, 0), 1000)
+        self._hscrollbar_changed(None)
+        
+        
+
+
+class _List_Item(button._button):
+    def __init__(self,label=None,image=None,value=None,**params): #TODO label= could conflict with the module label
+        #param image: an imagez.Image object (optional)
+        #param text: a string object
+        params.setdefault('cls','list.item')
+        button._button.__init__(self,**params)
+        self.group = None
+        self.value = value #(self, value)
+        self.widget = None
+        
+        if type(label) == str: 
+            label = basic.Label(label, cls=self.cls+".label")
+
+        if image and label:
+            self.widget = container.Container()
+            self.widget.add(image, 0, 0)
+            #HACK: improper use of .resize()
+            image.rect.w,image.rect.h = image.resize()
+            self.widget.add(label, image.rect.w, 0)
+        elif image: self.widget = image
+        elif label: self.widget = label
+        
+        self.pcls = ""
+    
+    def resize(self,width=None,height=None):
+         self.widget.rect.w,self.widget.rect.h = self.widget.resize()
+         return self.widget.rect.w,self.widget.rect.h
+#         self.widget._resize()
+#         self.rect.w,self.rect.h = self.widget.rect_margin.w,self.widget.rect_margin.h
+    
+    def event(self,e):
+        button._button.event(self,e)
+        if self.group.value == self.value: self.pcls = "down"
+    
+    def paint(self,s):
+        if self.group.value == self.value: self.pcls = "down"
+        self.widget.paint(surface.subsurface(s,self.widget.rect))
+    
+    def click(self):
+        self.group.value = self.value
+        for w in self.group.widgets:
+            if w != self: w.pcls = ""
+
+
+
+class List(ScrollArea):
+    """A list of items in an area.
+    
+    <p>This widget can be a form element, it has a value set to whatever item is selected.</p>
+    
+    <pre>List(width,height)</pre>
+    """
+    def _change(self, value):
+        self.value = self.group.value
+        self.send(CHANGE)
+
+    def __init__(self, width, height, **params):
+        params.setdefault('cls', 'list')
+        self.table = table.Table(width=width)
+        ScrollArea.__init__(self, self.table, width, height,hscrollbar=False ,**params)
+        
+        self.items = []
+        
+        g = group.Group()
+        self.group = g
+        g.connect(CHANGE,self._change,None)
+        self.value = self.group.value = None
+	
+	self.add = self._add
+	self.remove = self._remove
+        
+    def clear(self):
+        """Clear the list.
+        
+        <pre>List.clear()</pre>
+        """
+        self.items = []
+        self.group = group.Group()
+        self.group.connect(CHANGE,self._change,None)
+        self.table.clear()
+        self.set_vertical_scroll(0)
+        self.blur(self.myfocus)
+        
+    def _docs(self): #HACK: nasty hack to get the docs in "my way"
+        def add(self, label, image=None, value=None):
+            """Add an item to the list.
+            
+            <pre>List.add(label,image=None,value=None)</pre>
+            
+            <dl>
+            <dt>label<dd>a label for the item
+            <dt>image<dd>an image for the item
+            <dt>value<dd>a value for the item
+            </dl>
+            """
+            
+        def remove(self,value):
+            """Remove an item from the list.
+            
+            <pre>List.remove(value)</pre>
+            
+            <dl>
+            <dt>value<dd>a value of an item to remove from the list
+            </dl>
+            """
+        
+    def _add(self, label, image = None, value=None):
+    	item = _List_Item(label,image=image,value=value)
+        self.table.tr()
+        self.table.add(item)
+        self.items.append(item)
+        item.group = self.group
+        item.group.add(item)
+        
+    def _remove(self, item):
+    	for i in self.items:
+		if i.value == item: item = i
+        if item not in self.items: return
+        item.blur()
+        self.items.remove(item)
+        self.group.widgets.remove(item)
+        self.table.remove_row(item.style.row)
+        
+#class List(ListArea):
+#    def __init__(self,*args,**params):
+#        print 'gui.List','Scheduled to be renamed to ListArea.  API may also be changed in the future.'
+#        ListArea.__init__(self,*args,**params)
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