Question

我想将图像放入wxPanel的中心，我正在考虑我需要调整图像大小以适应wxPanel。但是我无法动态地获得wxPanel的大小。这里是一个测试代码

#!/usr/bin/python

# wxboxsizer.py

import wx

class MyFrame(wx.Frame):
    def __init__(self, parent, id, title):
        wx.Frame.__init__(self, parent, id, title, (-1, -1), wx.Size(500, 500))
        panel1 = wx.Panel(self, -1,style= wx.SIMPLE_BORDER)
        panel2 = wx.Panel(self, -1,style= wx.SIMPLE_BORDER)
        panel3 = wx.Panel(self, -1,style= wx.SIMPLE_BORDER)
        box = wx.BoxSizer(wx.VERTICAL)
        box.Add(panel1, 1,flag = wx.EXPAND|wx.ALL,border = 3 )
        box.Add(panel2, 1,flag = wx.EXPAND|wx.ALL,border = 3 )
        box.Add(panel3, 1,flag = wx.EXPAND |wx.ALL,border = 3)
        self.SetSizer(box)


class MyApp(wx.App):
    def OnInit(self):
        frame = MyFrame(None, -1, 'wxboxsizer.py')
        frame.Show(True)
        return True

app = MyApp(0)
app.MainLoop()

此代码可以让3个面板完美地适合框架，但是如何动态地获得面板的大小。此外，如何将图像放入面板中，让图像动态地适合面板。

我的解决方案：我只是在调整帧大小时获得了一个获取面板大小的方法。

#!/usr/bin/python

# wxboxsizer.py

import wx,os

class MyFrame(wx.Frame):
    def __init__(self, parent, id, title):
        wx.Frame.__init__(self, parent, id, title, (-1, -1), wx.Size(500, 500))
        self.panel1 = wx.Panel(self, -1,style= wx.SIMPLE_BORDER)
        panel2 = wx.Panel(self, -1,style= wx.SIMPLE_BORDER)
        panel3 = wx.Panel(self, -1,style= wx.SIMPLE_BORDER)
        box = wx.BoxSizer(wx.VERTICAL)
        box.Add(self.panel1, 1,flag = wx.EXPAND|wx.ALL,border = 3 )
        box.Add(panel2, 1,flag = wx.EXPAND|wx.ALL,border = 3 )
        box.Add(panel3, 1,flag = wx.EXPAND |wx.ALL,border = 3)

        self.Bind(wx.EVT_SIZE, self.OnSize)
        self.SetSizer(box)

    def OnSize(self, event):
        size = self.GetSize()
        size2 = self.panel1.GetSize()
        print size,size2
        event.Skip()


class MyApp(wx.App):
    def OnInit(self):
        frame = MyFrame(None, -1, 'wxboxsizer.py')
        frame.Show(True)
        return True

app = MyApp(0)
app.MainLoop()

当调整帧大小时，此代码可以显示面板的大小。

Answer 1

面板尺寸在Show()之后可用以下是获取面板尺寸并将相同图像放入不同尺寸面板的示例。 3个面板显示相同的图像。如果您在垂直分级器中显示图像，则必须修改Aspect计算。

import wx

class MyFrame(wx.Frame):
    def __init__(self, parent, id, title):
        wx.Frame.__init__(self, parent, id, title, (-1, -1), wx.Size(500, 500))
        self.MaxImageSize = 500
        self.panel1 = wx.Panel(self)
        self.panel2 = wx.Panel(self)
        self.panel3 = wx.Panel(self)
        self.Image1 = wx.StaticBitmap(self.panel1, bitmap=wx.EmptyBitmap(self.MaxImageSize, self.MaxImageSize))
        self.Image2 = wx.StaticBitmap(self.panel2, bitmap=wx.EmptyBitmap(self.MaxImageSize, self.MaxImageSize))
        self.Image3 = wx.StaticBitmap(self.panel3, bitmap=wx.EmptyBitmap(self.MaxImageSize, self.MaxImageSize))

        box = wx.BoxSizer(wx.HORIZONTAL)
        box.Add(self.panel1, 1,flag = wx.EXPAND|wx.ALL,border = 3)
        box.Add(self.panel2, 2,flag = wx.EXPAND|wx.ALL,border = 3)
        box.Add(self.panel3, 3,flag = wx.EXPAND|wx.ALL,border = 3)
        self.SetSizer(box)
        Img1 = wx.Image('./image2.png', wx.BITMAP_TYPE_PNG)
        Img2 = wx.Image('./image2.png', wx.BITMAP_TYPE_PNG)
        Img3 = wx.Image('./image2.png', wx.BITMAP_TYPE_PNG)
        self.Show()
        W,H = self.panel1.GetSize()
        IW = Img1.GetWidth()
        IH = Img1.GetHeight()
        NewW = W
        if IH>IW:
            Aspect = float(IW) /float(IH)
        else:
            Aspect = float(IH) / float(IW)
        NewH = W * Aspect

# scale the image, keeping ratio
        Img1 = Img1.Scale(NewW,NewH)
        self.Image1.SetBitmap(wx.BitmapFromImage(Img1))

        W,H = self.panel2.GetSize()
        NewW = W
        NewH = W * Aspect
# scale the image, keeping ratio
        Img2 = Img2.Scale(NewW,NewH)
        self.Image2.SetBitmap(wx.BitmapFromImage(Img2))

        W,H = self.panel3.GetSize()
        NewW = W
        NewH = W * Aspect
# scale the image, keeping ratio
        Img3 = Img3.Scale(NewW,NewH)
        self.Image3.SetBitmap(wx.BitmapFromImage(Img3))
        self.Fit()
        self.Layout()

class MyApp(wx.App):
    def OnInit(self):
        frame = MyFrame(None, -1, 'Fit images')
        frame.Show(True)
        return True

app = MyApp(0)
app.MainLoop()

wxpython：如何获得面板的大小或让图像适合面板的大小

1 个答案: