添加按钮纹理
在演示程序中找到目录Content/ButtonTextures（你不必打开项目，只需在文件系统中找到这个文件夹即可）。所有的按钮纹理都存储在那里。在你的项目内容中创建一个名为ButtonTextures的新目录，将所有的按钮图片拖放到那里，让它们在你的项目中可用。
添加Setters
//VideoCallWidget.h
...
UCLASS()
class AGORAVIDEOCALL_API UVideoCallWidget : public UUserWidget
{
GENERATED_BODY()
...
public:
void SetVideoCallPlayerController(AVideoCallPlayerController* VideoCallPlayerController);
void SetVideoCall(TUniquePtr<VideoCall> PassedVideoCallPtr);
...
};
//VideoCallWidget.cpp
void UVideoCallWidget::SetVideoCallPlayerController(AVideoCallPlayerController* VideoCallPlayerController)
{
PlayerController = VideoCallPlayerController;
}
void UVideoCallWidget::SetVideoCall(TUniquePtr<VideoCall> PassedVideoCallPtr)
{
VideoCallPtr = std::move(PassedVideoCallPtr);
}
增加用来更新 view 的方法
//VideoCallWidget.h
...
UCLASS()
class AGORAVIDEOCALL_API UVideoCallWidget : public UUserWidget
{
GENERATED_BODY()
...
private:
void SetVideoModeButtonToCameraOff();
void SetVideoModeButtonToCameraOn();
void SetAudioButtonToMute();
void SetAudioButtonToUnMute();
...
};
//VideoCallWidget.cpp
void UVideoCallWidget::SetVideoModeButtonToCameraOff()
{
if (VideomodeButtonCameraoffTexture)
{
VideoModeButton->WidgetStyle.Normal.SetResourceObject(VideomodeButtonCameraoffTexture);
VideoModeButton->WidgetStyle.Normal.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
VideoModeButton->WidgetStyle.Normal.DrawAs = ESlateBrushDrawType::Type::Image;
VideoModeButton->WidgetStyle.Hovered.SetResourceObject(VideomodeButtonCameraoffTexture);
VideoModeButton->WidgetStyle.Hovered.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
VideoModeButton->WidgetStyle.Hovered.DrawAs = ESlateBrushDrawType::Type::Image;
VideoModeButton->WidgetStyle.Pressed.SetResourceObject(VideomodeButtonCameraoffTexture);
VideoModeButton->WidgetStyle.Pressed.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
VideoModeButton->WidgetStyle.Pressed.DrawAs = ESlateBrushDrawType::Type::Image;
}
}
void UVideoCallWidget::SetVideoModeButtonToCameraOn()
{
if (VideomodeButtonCameraonTexture)
{
VideoModeButton->WidgetStyle.Normal.SetResourceObject(VideomodeButtonCameraonTexture);
VideoModeButton->WidgetStyle.Normal.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
VideoModeButton->WidgetStyle.Normal.DrawAs = ESlateBrushDrawType::Type::Image;
VideoModeButton->WidgetStyle.Hovered.SetResourceObject(VideomodeButtonCameraonTexture);
VideoModeButton->WidgetStyle.Hovered.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
VideoModeButton->WidgetStyle.Hovered.DrawAs = ESlateBrushDrawType::Type::Image;
VideoModeButton->WidgetStyle.Pressed.SetResourceObject(VideomodeButtonCameraonTexture);
VideoModeButton->WidgetStyle.Pressed.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
VideoModeButton->WidgetStyle.Pressed.DrawAs = ESlateBrushDrawType::Type::Image;
}
}
void UVideoCallWidget::SetAudioButtonToMute()
{
if (AudioButtonMuteTexture)
{
MuteLocalAudioButton->WidgetStyle.Normal.SetResourceObject(AudioButtonMuteTexture);
MuteLocalAudioButton->WidgetStyle.Normal.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
MuteLocalAudioButton->WidgetStyle.Normal.DrawAs = ESlateBrushDrawType::Type::Image;
MuteLocalAudioButton->WidgetStyle.Hovered.SetResourceObject(AudioButtonMuteTexture);
MuteLocalAudioButton->WidgetStyle.Hovered.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
MuteLocalAudioButton->WidgetStyle.Hovered.DrawAs = ESlateBrushDrawType::Type::Image;
MuteLocalAudioButton->WidgetStyle.Pressed.SetResourceObject(AudioButtonMuteTexture);
MuteLocalAudioButton->WidgetStyle.Pressed.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
MuteLocalAudioButton->WidgetStyle.Pressed.DrawAs = ESlateBrushDrawType::Type::Image;
}
}
void UVideoCallWidget::SetAudioButtonToUnMute()
{
if (AudioButtonUnmuteTexture)
{
MuteLocalAudioButton->WidgetStyle.Normal.SetResourceObject(AudioButtonUnmuteTexture);
MuteLocalAudioButton->WidgetStyle.Normal.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
MuteLocalAudioButton->WidgetStyle.Normal.DrawAs = ESlateBrushDrawType::Type::Image;
MuteLocalAudioButton->WidgetStyle.Hovered.SetResourceObject(AudioButtonUnmuteTexture);
MuteLocalAudioButton->WidgetStyle.Hovered.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
MuteLocalAudioButton->WidgetStyle.Hovered.DrawAs = ESlateBrushDrawType::Type::Image;
MuteLocalAudioButton->WidgetStyle.Pressed.SetResourceObject(AudioButtonUnmuteTexture);
MuteLocalAudioButton->WidgetStyle.Pressed.ImageSize = FVector2D(ButtonSizeX, ButtonSizeY);
MuteLocalAudioButton->WidgetStyle.Pressed.DrawAs = ESlateBrushDrawType::Type::Image;
}
}
