Turbo Badger: Adjusted backend to new integration interface

Added resources for fonty skin

Added stb font renderer to the backend so we can use nebula's copy of stb_truetype

Author: jayrulez

code/addons/tbui/CMakeLists.txt

@@ -22,15 +22,18 @@ add_shaders(tbui.fx)
 
 fips_dir(backend)
     fips_files(
+        tbuifontrenderer.cc
         tbuibatch.h
         tbuibitmap.cc
         tbuibitmap.h
-        tbuiclipboard.cc
-        tbuifile.cc
-        tbuifile.h
+        tbuiclipboardinterface.cc
+        tbuiclipboardinterface.h
+        tbuifileinterface.cc
+        tbuifileinterface.h
         tbuirenderer.cc
         tbuirenderer.h
-        tbuisystem.cc
+        tbuisysteminterface.cc
+        tbuisysteminterface.h
         tbuivertex.h
     )
 

code/addons/tbui/backend/tbuiclipboardinterface.cc

@@ -0,0 +1,37 @@
+//------------------------------------------------------------------------------
+//  backend/tbuiclipboard.cc
+//  (C) 2024 Individual contributors, see AUTHORS file
+//------------------------------------------------------------------------------
+#include "render/stdneb.h"
+#include "tbuiclipboardinterface.h"
+
+namespace TBUI
+{
+
+// == TBClipboard =====================================
+
+void
+TBUIClipboardInterface::Empty()
+{
+    clipboard.Clear();
+}
+
+bool
+TBUIClipboardInterface::HasText()
+{
+    return !clipboard.IsEmpty();
+}
+
+bool
+TBUIClipboardInterface::SetText(const char* text)
+{
+    return clipboard.Set(text);
+}
+
+bool
+TBUIClipboardInterface::GetText(tb::TBStr& text)
+{
+    return text.Set(clipboard);
+}
+
+} // namespace tb

code/addons/tbui/backend/tbuiclipboardinterface.h

@@ -0,0 +1,23 @@
+//------------------------------------------------------------------------------
+//  backend/tbuiclipboard.cc
+//  (C) 2024 Individual contributors, see AUTHORS file
+//------------------------------------------------------------------------------
+#include "render/stdneb.h"
+#include "platform/tb_clipboard_interface.h"
+
+namespace TBUI
+{
+
+class TBUIClipboardInterface : public tb::TBClipboardInterface
+{
+public:
+    void Empty() override;
+    bool HasText() override;
+    bool SetText(const char* text) override;
+    bool GetText(tb::TBStr& text) override;
+
+private:
+    tb::TBStr clipboard;
+};
+
+} // namespace tb

code/addons/tbui/backend/tbuifileinterface.cc

@@ -0,0 +1,77 @@
+//------------------------------------------------------------------------------
+//  backend/tbuifile.cc
+//  (C) 2024 Individual contributors, see AUTHORS file
+//------------------------------------------------------------------------------
+#include "render/stdneb.h"
+#include "io/ioserver.h"
+#include "io/stream.h"
+#include "tbuifileinterface.h"
+
+namespace
+{
+size_t
+allocateFileId()
+{
+    static size_t s_fileId = 0;
+    return ++s_fileId;
+}
+}
+
+namespace TBUI
+{
+tb::TBFileHandle
+TBUIFileInterface::Open(const char* filename, TBFileMode mode)
+{
+    if (mode != TBFileMode::MODE_READ)
+        return 0;
+
+    Ptr<IO::FileStream> stream = IO::IoServer::Instance()->CreateStream(filename).downcast<IO::FileStream>();
+    stream->SetAccessMode(IO::Stream::AccessMode::ReadAccess);
+    if (!stream->Open())
+    {
+        return 0;
+    }
+
+    size_t fileId = allocateFileId();
+    openFiles.Add(fileId, stream);
+    return static_cast<tb::TBFileHandle>(fileId);
+}
+
+void
+TBUIFileInterface::Close(tb::TBFileHandle file)
+{
+    size_t fileId = static_cast<size_t>(file);
+
+    if (openFiles.Contains(fileId))
+    {
+        openFiles[fileId]->Close();
+        openFiles.Erase(fileId);
+    }
+}
+
+long
+TBUIFileInterface::Size(tb::TBFileHandle file)
+{
+    size_t fileId = static_cast<size_t>(file);
+
+    if (openFiles.Contains(fileId))
+    {
+        return openFiles[fileId]->GetSize();
+    }
+
+    return 0;
+}
+
+size_t
+TBUIFileInterface::Read(tb::TBFileHandle file, void* buf, size_t elemSize, size_t count)
+{
+    size_t fileId = static_cast<size_t>(file);
+
+    if (openFiles.Contains(fileId))
+    {
+        return openFiles[fileId]->Read(buf, count);
+    }
+
+    return 0;
+}
+}

code/addons/tbui/backend/tbuifileinterface.h

@@ -0,0 +1,38 @@
+#pragma once
+//------------------------------------------------------------------------------
+/**
+    Turbobadger UI File interface
+
+    @copyright
+    (C) 2024 Individual contributors, see AUTHORS file
+*/
+//------------------------------------------------------------------------------
+
+#include "io/filestream.h"
+#include "util/string.h"
+#include "util/dictionary.h"
+#include "platform/tb_file_interface.h"
+
+namespace TBUI
+{
+class TBUIFileInterface : public tb::TBFileInterface
+{
+public:
+    tb::TBFileHandle Open(const char* filename, TBFileMode mode) override;
+    void Close(tb::TBFileHandle file) override;
+
+    long Size(tb::TBFileHandle file) override;
+    size_t Read(tb::TBFileHandle file, void* buf, size_t elemSize, size_t count) override;
+
+    bool IsOpen(tb::TBFileHandle file) const;
+
+private:
+    Util::Dictionary<size_t, Ptr<IO::FileStream>> openFiles;
+};
+
+inline bool
+TBUIFileInterface::IsOpen(tb::TBFileHandle file) const
+{
+    return openFiles.Contains(static_cast<size_t>(file));
+}
+}

code/addons/tbui/backend/tbuifontrenderer.cc

@@ -0,0 +1,101 @@
+// ================================================================================
+// ==      This file is a part of Turbo Badger. (C) 2011-2014, Emil Segerås      ==
+// ==                     See tb_core.h for more information.                    ==
+// ================================================================================
+
+#include <math.h>
+#include "tb_renderer.h"
+#include "platform/tb_system_interface.h"
+#include "tb_tempbuffer.h"
+#include "tbuifontrenderer.h"
+
+namespace TBUI
+{
+//#define STB_TRUETYPE_IMPLEMENTATION // force following include to generate
+#include "stb_truetype.h"
+
+TBUISTBFontRenderer::TBUISTBFontRenderer()
+    : render_data(nullptr)
+{
+}
+
+TBUISTBFontRenderer::~TBUISTBFontRenderer()
+{
+    stbtt_FreeBitmap(render_data, &font);
+}
+
+tb::TBFontMetrics
+TBUISTBFontRenderer::GetMetrics()
+{
+    tb::TBFontMetrics metrics;
+    int ascent, descent, lineGap;
+    stbtt_GetFontVMetrics(&font, &ascent, &descent, &lineGap);
+    metrics.ascent = (int)(ascent * scale + 0.5f);
+    metrics.descent = (int)((-descent) * scale + 0.5f);
+    metrics.height = (int)((ascent - descent + lineGap) * scale + 0.5f);
+    return metrics;
+}
+
+bool
+TBUISTBFontRenderer::RenderGlyph(tb::TBFontGlyphData* data, UCS4 cp)
+{
+    stbtt_FreeBitmap(render_data, &font);
+    render_data = stbtt_GetCodepointBitmap(&font, 0, scale, cp, &data->w, &data->h, 0, 0);
+    data->data8 = render_data;
+    data->stride = data->w;
+    data->rgb = false;
+    return data->data8 ? true : false;
+}
+
+void
+TBUISTBFontRenderer::GetGlyphMetrics(tb::TBGlyphMetrics* metrics, UCS4 cp)
+{
+    int advance, leftSideBearing;
+    const int gi = stbtt_FindGlyphIndex(&font, cp);
+    stbtt_GetGlyphHMetrics(&font, gi, &advance, &leftSideBearing);
+    metrics->advance = (int)roundf(advance * scale);
+
+    int ix0, iy0;
+    stbtt_GetGlyphBitmapBoxSubpixel(&font, gi, scale, scale, 0.f, 0.f, &ix0, &iy0, 0, 0);
+    metrics->x = ix0;
+    metrics->y = iy0;
+}
+
+int
+TBUISTBFontRenderer::GetAdvance(UCS4 cp1, UCS4 cp2)
+{
+    int advance, leftSideBearing;
+    const int gi1 = stbtt_FindGlyphIndex(&font, cp1);
+    stbtt_GetGlyphHMetrics(&font, gi1, &advance, &leftSideBearing);
+    if (font.kern)
+        advance += stbtt_GetGlyphKernAdvance(&font, gi1, stbtt_FindGlyphIndex(&font, cp2));
+    return (int)roundf(advance * scale);
+}
+
+bool
+TBUISTBFontRenderer::Load(const char* filename, int size)
+{
+    if (!ttf_buffer.AppendFile(filename))
+        return false;
+
+    const unsigned char* ttf_ptr = (const unsigned char*)ttf_buffer.GetData();
+    stbtt_InitFont(&font, ttf_ptr, stbtt_GetFontOffsetForIndex(ttf_ptr, 0));
+
+    scale = stbtt_ScaleForPixelHeight(&font, (float)size);
+    return true;
+}
+
+tb::TBFontFace*
+TBUISTBFontRenderer::Create(tb::TBFontManager* font_manager, const char* filename, const tb::TBFontDescription& font_desc)
+{
+    if (TBUISTBFontRenderer* fr = new TBUISTBFontRenderer())
+    {
+        if (fr->Load(filename, (int)font_desc.GetSize()))
+            if (tb::TBFontFace* font = new tb::TBFontFace(font_manager->GetGlyphCache(), fr, font_desc))
+                return font;
+        delete fr;
+    }
+    return nullptr;
+}
+
+} // namespace TBUI

code/addons/tbui/backend/tbuifontrenderer.h

@@ -0,0 +1,37 @@
+// ================================================================================
+// ==      This file is a part of Turbo Badger. (C) 2011-2014, Emil Segerås      ==
+// ==                     See tb_core.h for more information.                    ==
+// ================================================================================
+
+#include <math.h>
+#include "tb_font_renderer.h"
+#include "tb_renderer.h"
+#include "platform/tb_system_interface.h"
+#include "tb_tempbuffer.h"
+
+namespace TBUI
+{
+/** STBFontRenderer renders fonts using stb_truetype.h (http://nothings.org/) */
+
+class TBUISTBFontRenderer : public tb::TBFontRenderer
+{
+public:
+    TBUISTBFontRenderer();
+    ~TBUISTBFontRenderer();
+
+    bool Load(const char* filename, int size);
+
+    virtual tb::TBFontFace* Create(tb::TBFontManager* font_manager, const char* filename, const tb::TBFontDescription& font_desc);
+
+    virtual tb::TBFontMetrics GetMetrics();
+    virtual bool RenderGlyph(tb::TBFontGlyphData* dst_bitmap, UCS4 cp);
+    virtual void GetGlyphMetrics(tb::TBGlyphMetrics* metrics, UCS4 cp);
+    virtual int GetAdvance(UCS4 cp1, UCS4 cp2);
+
+private:
+    stbtt_fontinfo font;
+    tb::TBTempBuffer ttf_buffer;
+    unsigned char* render_data;
+    float scale;
+};
+}