delphi - TSpeedbutton 中的图像与 TImageList

Question

我尝试使用 TToolbar 以及 TActionList、TSpeedbutton 和 TImageList 创建一个工具栏。
我使用了32px的方形图像，但是当我在TSpeedButton中通过ImageIndex选择图像时，图像尺寸小于32px，我认为是16px。

如何使用 TImageList 设置 TSpeedButtons 中图像的大小？

这是一个 MVCE:

unit Unit50;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,
  System.Actions, FMX.ActnList, FMX.Controls.Presentation, FMX.StdCtrls,
  System.ImageList, FMX.ImgList;

type
  TForm50 = class(TForm)
    ActionList1: TActionList;
    ImageList1: TImageList;
    SpeedButton1: TSpeedButton;
    Action1: TAction;
  end;

var
  Form50: TForm50;

implementation
{$R *.fmx}
end.

DFM:

object Form50: TForm50
  Left = 0
  Top = 0
  Caption = 'Form50'
  ClientHeight = 480
  ClientWidth = 640
  FormFactor.Width = 320
  FormFactor.Height = 480
  FormFactor.Devices = [Desktop]
  DesignerMasterStyle = 0
  object SpeedButton1: TSpeedButton
    Action = Action1
    Enabled = True
    Images = ImageList1
    ImageIndex = 0
    Position.X = 360.000000000000000000
    Position.Y = 120.000000000000000000
    Visible = True
  end
  object ActionList1: TActionList
    Images = ImageList1
    Left = 272
    Top = 128
    object Action1: TAction
      Text = 'Action1'
      ImageIndex = 0
    end
  end
  object ImageList1: TImageList
    Source = <
      item
        MultiResBitmap.Height = 32
        MultiResBitmap.Width = 32
        MultiResBitmap = <
          item
            Width = 32
            Height = 32
            PNG = {
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              F4000000017352474200AECE1CE90000000467414D410000B18F0BFC61050000
              06BA4944415458477557596C9455143EB374BA4C2804A3159382096A30A96C2F
              2A2F4AE20216431482C4170DFAA028C4E89B31C6109F545CA26C01890F2A9620
              098B0F22124A69A1C1C428469BB085049C0A48D7994EDB593CDF59EEFC7F837F
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              EEB114E3F8E3E771EF17C66037897F6280FF55781E4B5229FDC6FA344FA4526A
              BCCCC0E40210FE4AF3380CB931999BF25B8C8A6370D20CD83D9E4BBAE75894E0
              79007140E2291B0323B68F823420B29F6F6CDE06E486D5D971EF8524018A7D2B
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            FileName = 'C:\Users\Johan\Pictures\avatar.png'
          end>
        Name = 'avatar'
      end>
    Destination = <
      item
        Layers = <
          item
            Name = 'avatar'
            SourceRect.Right = 64.000000000000000000
            SourceRect.Bottom = 64.000000000000000000
          end>
      end
      item
        Layers = <
          item
            Name = 'avatar'
          end>
      end>
    Left = 272
    Top = 256
  end
end

Answer 1

TSpeedButton 的字形大小在样式表中定义。
只有在那里你才能改变它。

这是要做的事情:

首先右键单击按钮并选择:编辑样式(默认或自定义)。

在结构窗口中选择字形并将其大小更改为 32x32。

点击应用并关闭

您可能需要调整 SpeedButton 的大小，以便它有足够的空间来显示字形。
(理想情况下，您应该以(默认)样式调整速度按钮的大小，但我在这里采用了快捷方式)。现在将以 32x32 的尺寸显示。

在不同的设备上，您可能需要使用不同的样式表。
特别是。在一些超高分辨率手机上。
如果是这样，请确保您的图像列表中有多个分辨率的图像。如果您不这样做，FMX 将重新调整您的图像，这看起来不会达到最佳效果。