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https://github.com/ZDoom/gzdoom-gles.git
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- added a function that creates a texture for a text in a given font.
Not tested yet, this is for synthesizing localized variant of Doom's textures with text content.
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@ -113,6 +113,12 @@ public:
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{
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return std::make_pair(LeftOffset, TopOffset);
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}
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void SetOffsets(int x, int y)
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{
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LeftOffset = x;
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TopOffset = y;
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}
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int LumpNum() const
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{
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@ -42,13 +42,125 @@
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#include "v_video.h"
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#include "w_wad.h"
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#include "image.h"
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#include "textures/formats/multipatchtexture.h"
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#include "gstrings.h"
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#include "vm.h"
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#include "serializer.h"
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int ListGetInt(VMVa_List &tags);
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//==========================================================================
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//
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// Create a texture from a text in a given font.
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//
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//==========================================================================
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FTexture * BuildTextTexture(FFont *font, const char *string, int textcolor)
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{
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int w;
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const uint8_t *ch;
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int c;
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double cx;
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double cy;
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FRemapTable *range;
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int kerning;
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FTexture *pic;
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kerning = font->GetDefaultKerning();
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ch = (const uint8_t *)string;
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cx = 0;
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cy = 0;
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IntRect box;
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while (auto c = GetCharFromString(ch))
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{
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if (c == TEXTCOLOR_ESCAPE)
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{
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// Here we only want to measure the texture so just parse over the color.
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V_ParseFontColor(ch, 0, 0);
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continue;
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}
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if (c == '\n')
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{
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cx = 0;
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cy += font->GetHeight();
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continue;
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}
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if (nullptr != (pic = font->GetChar(c, CR_UNTRANSLATED, &w, nullptr)))
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{
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auto img = pic->GetImage();
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auto offsets = img->GetOffsets();
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double x = cx - offsets.first;
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double y = cy - offsets.second;
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double ww = img->GetWidth();
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double h = img->GetHeight();
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box.AddToRect(x, y);
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box.AddToRect(x + ww, y + h);
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}
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cx += (w + kerning);
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}
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cx = -box.left;
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cy = -box.top;
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TArray<TexPart> part(strlen(string));
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while (auto c = GetCharFromString(ch))
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{
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if (c == TEXTCOLOR_ESCAPE)
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{
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EColorRange newcolor = V_ParseFontColor(ch, textcolor, textcolor);
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if (newcolor != CR_UNDEFINED)
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{
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range = font->GetColorTranslation(newcolor);
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textcolor = newcolor;
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}
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continue;
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}
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if (c == '\n')
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{
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cx = 0;
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cy += font->GetHeight();
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continue;
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}
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if (nullptr != (pic = font->GetChar(c, textcolor, &w, nullptr)))
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{
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auto img = pic->GetImage();
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auto offsets = img->GetOffsets();
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double x = cx - offsets.first;
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double y = cy - offsets.second;
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auto &tp = part[part.Reserve(1)];
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tp.OriginX = x;
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tp.OriginY = y;
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tp.Image = img;
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tp.Translation = range;
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}
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cx += (w + kerning);
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}
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FMultiPatchTexture *image = new FMultiPatchTexture(box.width, box.height, part, false, false);
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image->SetOffsets(-box.left, -box.top);
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FImageTexture *tex = new FImageTexture(image, "");
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tex->SetUseType(ETextureType::MiscPatch);
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TexMan.AddTexture(tex);
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return tex;
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}
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//==========================================================================
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//
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// DrawChar
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@ -86,6 +86,21 @@ struct IntRect
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left += xofs;
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top += yofs;
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}
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void AddToRect(int x, int y)
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{
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if (x < left)
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left = x;
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if (x > left + width)
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width = x - left;
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if (y < top)
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top = y;
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if (y > top + height)
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height = y - top;
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}
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};
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