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增加预览图留白

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ww-rm
2025-03-21 20:09:08 +08:00
parent 3442ace981
commit f153d251c8
1 changed files with 34 additions and 25 deletions
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59
SpineViewer/Spine/Spine.cs
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@@ -327,6 +327,35 @@ namespace SpineViewer.Spine
[Browsable(false)]
public abstract RectangleF Bounds { get; }
/// <summary>
/// 获取初始状态下合适的 View, 参数单位为像素
/// </summary>
public SFML.Graphics.View GetInitView(uint width, uint height, uint paddingL = 1, uint paddingR = 1, uint paddingT = 1, uint paddingB = 1)
{
var tmp = CurrentAnimation;
CurrentAnimation = EMPTY_ANIMATION;
var bounds = Bounds;
CurrentAnimation = tmp;
float sizeX = bounds.Width;
float sizeY = bounds.Height;
float innerW = width - paddingL - paddingR;
float innerH = height - paddingT - paddingB;
float scale = 1;
if ((sizeY / sizeX) < (innerH / innerW))
scale = sizeX / innerW; // 相同的 X, 视窗 Y 更大
else
scale = sizeY / innerH; // 相同的 Y, 视窗 X 更大
var x = bounds.X + bounds.Width / 2 + ((float)paddingL - (float)paddingR) * scale;
var y = bounds.Y + bounds.Height / 2 + ((float)paddingT - (float)paddingB) * scale;
var viewX = width * scale;
var viewY = height * scale;
return new(new(x, y), new(viewX, -viewY));
}
/// <summary>
/// 骨骼预览图
/// </summary>
@@ -350,37 +379,17 @@ namespace SpineViewer.Spine
/// <summary>
/// 获取指定尺寸的预览图
/// </summary>
public SFML.Graphics.Image GetPreview(uint width, uint height)
public SFML.Graphics.Image GetPreview(uint width, uint height, uint paddingL = 1, uint paddingR = 1, uint paddingT = 1, uint paddingB = 1)
{
var curAnimation = CurrentAnimation;
CurrentAnimation = EMPTY_ANIMATION;
var bounds = Bounds;
float viewX = width;
float viewY = height;
float sizeX = bounds.Width;
float sizeY = bounds.Height;
var scale = 1f;
if ((sizeY / sizeX) < (viewY / viewX))
scale = sizeX / viewX;// 相同的 X, 视窗 Y 更大
else
scale = sizeY / viewY;// 相同的 Y, 视窗 X 更大
viewX *= scale;
viewY *= scale;
// XXX: 貌似无法使用 using 或者 Dispose 主动释放 tex 资源
// 在批量添加的中途, 如果触发 GC? 会卡死, 目前未知原因
var tex = new SFML.Graphics.RenderTexture(width, height);
var view = tex.GetView();
view.Center = new(bounds.X + viewX / 2, bounds.Y + viewY / 2);
view.Size = new(viewX, -viewY);
tex.SetView(view);
tex.Clear(SFML.Graphics.Color.Transparent);
tex.SetView(GetInitView(width, height, paddingL, paddingR, paddingT, paddingB));
var tmp = CurrentAnimation;
CurrentAnimation = EMPTY_ANIMATION;
tex.Draw(this);
CurrentAnimation = tmp;
tex.Display();
CurrentAnimation = curAnimation;
return tex.Texture.CopyToImage();
}