//~ImFontAtlas();
ImFont AddFont(ImFontConfig font_cfg)
{
System.Diagnostics.Debug.Assert(font_cfg.FontData != null && font_cfg.FontDataSize > 0);
System.Diagnostics.Debug.Assert(font_cfg.SizePixels > 0.0f);
// Create new font
if (!font_cfg.MergeMode)
{
ImFont font = new ImFont();
//IM_PLACEMENT_NEW(font) ImFont();
Fonts.push_back(font);
}
ConfigData.push_back(font_cfg);
ImFontConfig new_font_cfg = ConfigData[ConfigData.Size - 1];
new_font_cfg.DstFont = Fonts[Fonts.Size - 1];
if (!new_font_cfg.FontDataOwnedByAtlas)
{
//new_font_cfg.FontData = ImGui::MemAlloc(new_font_cfg.FontDataSize);
new_font_cfg.FontDataOwnedByAtlas = true;
var fontData = new byte[font_cfg.FontData.Length];
Array.Copy(font_cfg.FontData, fontData, fontData.Length);
new_font_cfg.FontData = fontData;
//memcpy(new_font_cfg.FontData, font_cfg->FontData, (size_t)new_font_cfg.FontDataSize);
}
var library = new Library();
new_font_cfg.Face = new Face(library, new_font_cfg.FontData, 0);
//new_font_cfg.Face.SetCharSize(0, new_font_cfg.SizePixels, 0, 96);
new_font_cfg.Face.SetPixelSizes(0, (uint)new_font_cfg.SizePixels);
// Invalidate texture
ClearTexData();
return(Fonts[Fonts.Size - 1]);
}
void RenderCustomTexData(MaxRectsBinPack spc, int pass, ImVector <ImFontPackingRect> rects)
{
// A work of art lies ahead! (. = white layer, X = black layer, others are blank)
// The white texels on the top left are the ones we'll use everywhere in ImGui to render filled shapes.
const int TEX_DATA_W = 90;
const int TEX_DATA_H = 27;
const string texture_data =
"..- -XXXXXXX- X - X -XXXXXXX - XXXXXXX" +
"..- -X.....X- X.X - X.X -X.....X - X.....X" +
"--- -XXX.XXX- X...X - X...X -X....X - X....X" +
"X - X.X - X.....X - X.....X -X...X - X...X" +
"XX - X.X -X.......X- X.......X -X..X.X - X.X..X" +
"X.X - X.X -XXXX.XXXX- XXXX.XXXX -X.X X.X - X.X X.X" +
"X..X - X.X - X.X - X.X -XX X.X - X.X XX" +
"X...X - X.X - X.X - XX X.X XX - X.X - X.X " +
"X....X - X.X - X.X - X.X X.X X.X - X.X - X.X " +
"X.....X - X.X - X.X - X..X X.X X..X - X.X - X.X " +
"X......X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X XX-XX X.X " +
"X.......X - X.X - X.X -X.....................X- X.X X.X-X.X X.X " +
"X........X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X..X-X..X.X " +
"X.........X -XXX.XXX- X.X - X..X X.X X..X - X...X-X...X " +
"X..........X-X.....X- X.X - X.X X.X X.X - X....X-X....X " +
"X......XXXXX-XXXXXXX- X.X - XX X.X XX - X.....X-X.....X " +
"X...X..X --------- X.X - X.X - XXXXXXX-XXXXXXX " +
"X..X X..X - -XXXX.XXXX- XXXX.XXXX ------------------------------------" +
"X.X X..X - -X.......X- X.......X - XX XX - " +
"XX X..X - - X.....X - X.....X - X.X X.X - " +
" X..X - X...X - X...X - X..X X..X - " +
" XX - X.X - X.X - X...XXXXXXXXXXXXX...X - " +
"------------ - X - X -X.....................X- " +
" ----------------------------------- X...XXXXXXXXXXXXX...X - " +
" - X..X X..X - " +
" - X.X X.X - " +
" - XX XX - ";
//ImVector < stbrp_rect > &rects = *(ImVector<stbrp_rect>*)p_rects;
if (pass == 0)
{
// Request rectangles
var custom = new ImFontPackingRect();
custom.w = TEX_DATA_W * 2 + 1;
custom.h = TEX_DATA_H + 1;
rects.push_back(custom);
custom.pack(spc);
}
else if (pass == 1)
{
// Render/copy pixels
//the first rect in rects will always be custom font data
var r = rects[0];
for (int y = 0, n = 0; y < TEX_DATA_H; y++)
{
for (int x = 0; x < TEX_DATA_W; x++, n++)
{
int offset0 = (r.x + x) + (r.y + y) * TexWidth;
int offset1 = offset0 + 1 + TEX_DATA_W;
TexPixelsAlpha8[offset0] = (byte)(texture_data[n] == '.' ? 0xFF : 0x00);
TexPixelsAlpha8[offset1] = (byte)(texture_data[n] == 'X' ? 0xFF : 0x00);
}
}
ImVec2 tex_uv_scale = new ImVec2(1.0f / TexWidth, 1.0f / TexHeight);
TexUvWhitePixel = new ImVec2((r.x + 0.5f) * tex_uv_scale.x, (r.y + 0.5f) * tex_uv_scale.y);
//TODO: Finish render custom text
//// Setup mouse cursors
var cursor_datas = new ImVec2[, ]
{
// Pos ........ Size ......... Offset ......
{ new ImVec2(0, 3), new ImVec2(12, 19), new ImVec2(0, 0) }, // ImGuiMouseCursor_Arrow
{ new ImVec2(13, 0), new ImVec2(7, 16), new ImVec2(4, 8) }, // ImGuiMouseCursor_TextInput
{ new ImVec2(31, 0), new ImVec2(23, 23), new ImVec2(11, 11) }, // ImGuiMouseCursor_Move
{ new ImVec2(21, 0), new ImVec2(9, 23), new ImVec2(5, 11) }, // ImGuiMouseCursor_ResizeNS
{ new ImVec2(55, 18), new ImVec2(23, 9), new ImVec2(11, 5) }, // ImGuiMouseCursor_ResizeEW
{ new ImVec2(73, 0), new ImVec2(17, 17), new ImVec2(9, 9) }, // ImGuiMouseCursor_ResizeNESW
{ new ImVec2(55, 0), new ImVec2(17, 17), new ImVec2(9, 9) }, // ImGuiMouseCursor_ResizeNWSE
};
for (int type = 0; type < 7; type++)
{
ImGuiMouseCursorData cursor_data = ImGui.Instance.State.MouseCursorData[type];
ImVec2 pos = cursor_datas[type, 0] + new ImVec2((float)r.x, (float)r.y);
ImVec2 size = cursor_datas[type, 1];
cursor_data.Type = (ImGuiMouseCursor)type;
cursor_data.Size = size;
cursor_data.HotOffset = cursor_datas[type, 2];
cursor_data.TexUvMin[0] = (pos) * tex_uv_scale;
cursor_data.TexUvMax[0] = (pos + size) * tex_uv_scale;
pos.x += TEX_DATA_W + 1;
cursor_data.TexUvMin[1] = (pos) * tex_uv_scale;
cursor_data.TexUvMax[1] = (pos + size) * tex_uv_scale;
}
}
}
//public ImRect[] PackFont(MaxRectsBinPack packer, Texture2D texture, Texture2D[] textures, int width, int height, int maxSize)
//{
// if (width > maxSize && height > maxSize) return null;
// if (width > maxSize || height > maxSize) { int temp = width; width = height; height = temp; }
// MaxRectsBinPack bp = new MaxRectsBinPack(width, height);
// ImRect[] rects = new ImRect[textures.Length];
// for (int i = 0; i < textures.Length; i++)
// {
// Texture2D tex = textures[i];
// ImRect rect = bp.Insert(tex.width, tex.height, MaxRectsBinPack.FreeRectChoiceHeuristic.RectBestAreaFit);
// if (rect.width == 0 || rect.height == 0)
// {
// return PackTextures(texture, textures, width * (width <= height ? 2 : 1), height * (height < width ? 2 : 1), maxSize);
// }
// rects[i] = rect;
// }
// texture.Resize(width, height);
// texture.SetPixels(new ImColor[width * height]);
// for (int i = 0; i < textures.Length; i++)
// {
// Texture2D tex = textures[i];
// ImRect rect = rects[i];
// ImColor[] colors = tex.GetPixels();
// if (rect.width != tex.width)
// {
// ImColor[] newColors = tex.GetPixels();
// for (int x = 0; x < rect.width; x++)
// {
// for (int y = 0; y < rect.height; y++)
// {
// int prevIndex = ((int)rect.height - (y + 1)) + x * (int)tex.width;
// newColors[x + y * (int)rect.width] = colors[prevIndex];
// }
// }
// colors = newColors;
// }
// texture.SetPixels((int)rect.x, (int)rect.y, (int)rect.width, (int)rect.height, colors);
// rect.x /= width;
// rect.y /= height;
// rect.width /= width;
// rect.height /= height;
// rects[i] = rect;
// }
// return rects;
//}
internal bool Build()
{
System.Diagnostics.Debug.Assert(ConfigData.Size > 0);
TexID = null;
TexWidth = TexHeight = 0;
TexUvWhitePixel = new ImVec2(0, 0);
ClearTexData();
int total_glyph_count = 0;
int total_glyph_range_count = 0;
for (int input_i = 0; input_i < ConfigData.Size; input_i++)
{
ImFontConfig cfg = ConfigData[input_i];
System.Diagnostics.Debug.Assert(cfg.DstFont != null && (!cfg.DstFont.IsLoaded() || cfg.DstFont.ContainerAtlas == this));
System.Diagnostics.Debug.Assert(cfg.FontData != null);
// Count glyphs
if (cfg.GlyphRanges == null)
{
cfg.GlyphRanges = GetGlyphRangesDefault();
}
for (int in_range = 0; cfg.GlyphRanges[in_range] > 0 && cfg.GlyphRanges[in_range + 1] > 0; in_range += 2)
{
total_glyph_count += (cfg.GlyphRanges[in_range + 1] - cfg.GlyphRanges[in_range]) + 1;
total_glyph_range_count++;
}
}
// Start packing. We need a known width for the skyline algorithm. Using a cheap heuristic here to decide of width. User can override TexDesiredWidth if they wish.
// After packing is done, width shouldn't matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
TexWidth = (TexDesiredWidth > 0) ? TexDesiredWidth : (total_glyph_count > 4000) ? 4096 : (total_glyph_count > 2000) ? 2048 : (total_glyph_count > 1000) ? 1024 : 512;
TexHeight = 0;
int max_tex_height = 1024 * 32;
var spc = new MaxRectsBinPack(TexWidth, max_tex_height, false);
ImVector <ImFontPackingRect> rects = new ImVector <ImFontPackingRect>();
RenderCustomTexData(spc, 0, rects);
// First font pass: pack all glyphs (no rendering at this point, we are working with rectangles in an infinitely tall texture at this point)
for (int input_i = 0; input_i < ConfigData.Size; input_i++)
{
ImFontConfig cfg = ConfigData[input_i];
cfg.Face.SetPixelSizes((uint)(cfg.SizePixels * cfg.OversampleH), (uint)(cfg.SizePixels * cfg.OversampleV));
for (int in_range = 0; cfg.GlyphRanges[in_range] > 0 && cfg.GlyphRanges[in_range + 1] > 0; in_range += 2)
{
var glyphs = new List <ImRect>((cfg.GlyphRanges[in_range + 1] - cfg.GlyphRanges[in_range]) + 1);
var packedGlyphs = new List <ImRect>((cfg.GlyphRanges[in_range + 1] - cfg.GlyphRanges[in_range]) + 1);
for (var range = cfg.GlyphRanges[in_range]; range <= cfg.GlyphRanges[in_range + 1]; range++)
{
char c = (char)range;
uint glyphIndex = cfg.Face.GetCharIndex(c);
cfg.Face.LoadGlyph(glyphIndex, LoadFlags.Default, LoadTarget.Normal);
//added padding to keep from bleeding
glyphs.Add(new ImRect(0, 0, (int)cfg.Face.Glyph.Metrics.Width + 2, (int)cfg.Face.Glyph.Metrics.Height + 2));
spc.Insert((int)cfg.Face.Glyph.Metrics.Width + 2, (int)cfg.Face.Glyph.Metrics.Height + 2, MaxRectsBinPack.FreeRectChoiceHeuristic.RectBestAreaFit);
}
spc.Insert(glyphs, packedGlyphs, MaxRectsBinPack.FreeRectChoiceHeuristic.RectBestAreaFit);
System.Diagnostics.Debug.Assert(glyphs.Count == packedGlyphs.Count);
for (var i = 0; i < glyphs.Count; i++)
{
var c = (cfg.GlyphRanges[in_range] + i);
var g = glyphs[i];
var pg = packedGlyphs[i];
var was_packed = pg.width > 0 && pg.height > 0;
var r = new ImFontPackingRect()
{
id = c,
x = (int)pg.x + 1,
y = (int)pg.y + 1,
w = (int)pg.width,
h = (int)pg.height,
was_packed = was_packed
};
if (was_packed)
{
TexHeight = ImGui.Max(TexHeight, r.y + r.h);
}
rects.push_back(r);
}
}
}
// Create texture
TexHeight = ImGui.UpperPowerOfTwo(TexHeight);
TexPixelsAlpha8 = new byte[TexWidth * TexHeight];
for (int input_i = 0; input_i < ConfigData.Size; input_i++)
{
ImFontConfig cfg = ConfigData[input_i];
ImFont dst_font = cfg.DstFont;
int unscaled_ascent = cfg.Face.Ascender,
unscaled_descent = cfg.Face.Descender;
float font_scale = cfg.SizePixels / (unscaled_ascent - unscaled_descent); //taken from stbtt_ScaleForPixelHeight
var max_height = cfg.Face.Height * font_scale;
float ascent = unscaled_ascent * font_scale;
float descent = unscaled_descent * font_scale;
if (!cfg.MergeMode)
{
dst_font.ContainerAtlas = this;
dst_font.ConfigData = cfg;
dst_font.ConfigDataCount = 0;
dst_font.FontSize = cfg.SizePixels;
dst_font.Ascent = ascent;
dst_font.Descent = descent;
dst_font.Glyphs.resize(0);
}
dst_font.ConfigDataCount++;
float off_y = (cfg.MergeMode && cfg.MergeGlyphCenterV) ? (ascent - dst_font.Ascent) * 0.5f : 0.0f;
//render
for (var i = 0; i < rects.Size; i++)
{
var rect = rects[i];
//if (rect.id > 0 /*&& rect.was_packed*/)
{
var codepoint = (ushort)rect.id;
if (cfg.MergeMode && dst_font.HasGlyph((char)codepoint))
{
continue;
}
uint glyphIndex = cfg.Face.GetCharIndex(codepoint);
cfg.Face.LoadGlyph(glyphIndex, LoadFlags.Render, LoadTarget.Normal);
cfg.Face.Glyph.RenderGlyph(RenderMode.Normal);
var bmp = cfg.Face.Glyph.Bitmap;
for (var x = 0; x < bmp.Width; x++)
{
for (var y = 0; y < bmp.Rows; y++)
{
TexPixelsAlpha8[(rect.x + x) + ((rect.y + y) * TexWidth)] = bmp.BufferData[x + y * bmp.Pitch];
}
}
}
}
cfg.Face.SetPixelSizes((uint)cfg.SizePixels, (uint)cfg.SizePixels);
//need to calculate origin/baseline
var top = 0f;
var bot = 0f;
for (var i = 0; i < rects.Size; i++)
{
var rect = rects[i];
//if (rect.id > 0 /*&& rect.was_packed*/)
{
var codepoint = (ushort)rect.id;
if (cfg.MergeMode && dst_font.HasGlyph((char)codepoint))
{
continue;
}
uint glyphIndex = cfg.Face.GetCharIndex(codepoint);
cfg.Face.LoadGlyph(glyphIndex, LoadFlags.ComputeMetrics, LoadTarget.Normal);
var glyphTop = (float)cfg.Face.Glyph.Metrics.HorizontalBearingY;
var glyphBot = (float)(cfg.Face.Glyph.Metrics.Height - cfg.Face.Glyph.Metrics.HorizontalBearingY);
if (glyphTop > top)
{
top = glyphTop;
}
if (glyphBot > bot)
{
bot = glyphBot;
}
}
}
//dst_font.FallbackGlyph = null; // Always clear fallback so FindGlyph can return NULL. It will be set again in BuildLookupTable()
for (var i = 0; i < rects.Size; i++)
{
var rect = rects[i];
//if (rect.id > 0 /*&& rect.was_packed*/)
{
var codepoint = (ushort)rect.id;
if (cfg.MergeMode && dst_font.HasGlyph((char)codepoint))
{
continue;
}
uint glyphIndex = cfg.Face.GetCharIndex(codepoint);
cfg.Face.LoadGlyph(glyphIndex, LoadFlags.ComputeMetrics, LoadTarget.Normal);
dst_font.Glyphs.resize(dst_font.Glyphs.Size + 1);
var glyph = dst_font.Glyphs[dst_font.Glyphs.Size - 1];
glyph.Codepoint = codepoint;
glyph.X0 = (int)cfg.Face.Glyph.Metrics.HorizontalBearingX + (float)cfg.Face.Glyph.BitmapLeft;
glyph.X1 = (int)cfg.Face.Glyph.Metrics.Width + glyph.X0;
glyph.Y0 = top - (float)cfg.Face.Glyph.Metrics.HorizontalBearingY;
glyph.Y1 = glyph.Y0 + (float)cfg.Face.Glyph.Metrics.Height;
glyph.U0 = rect.x / (float)TexWidth;
glyph.V0 = rect.y / (float)TexHeight;
glyph.U1 = (rect.x + rect.w) / (float)TexWidth;
glyph.V1 = (rect.y + rect.h) / (float)TexHeight;
glyph.XAdvance = ((int)cfg.Face.Glyph.Metrics.HorizontalAdvance + cfg.GlyphExtraSpacing.x); // Bake spacing into XAdvance
if (cfg.PixelSnapH)
{
glyph.XAdvance = (int)(glyph.XAdvance + 0.5f);
}
dst_font.Glyphs[dst_font.Glyphs.Size - 1] = glyph;
}
}
cfg.DstFont.BuildLookupTable();
}
// Cleanup temporaries
//ImGui::MemFree(buf_packedchars);
//ImGui::MemFree(buf_ranges);
//ImGui::MemFree(tmp_array);
// Render into our custom data block
RenderCustomTexData(spc, 1, rects);
return(true);
}