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Rename Nano file; Make base nano API into class plus widget

gh-pages
falkTX 11 years ago
parent
af09cb0a12
commit
5a65496535
4 changed files with 151 additions and 104 deletions
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  1. +1
    -1
      dgl/Makefile
  2. +54
    -9
      dgl/NanoVG.hpp
  3. +92
    -93
      dgl/src/NanoVG.cpp
  4. +4
    -1
      dgl/src/nanovg/fontstash.h

+ 1
- 1
dgl/Makefile View File

@@ -23,7 +23,7 @@ OBJS = \
src/ImageKnob.cpp.o \
src/ImageSlider.cpp.o \
src/ImageSwitch.cpp.o \
src/NanoWidget.cpp.o \
src/NanoVG.cpp.o \
src/Widget.cpp.o

ifeq ($(MACOS),true)


dgl/NanoWidget.hpp → dgl/NanoVG.hpp View File

@@ -26,12 +26,13 @@ struct NVGpaint;
START_NAMESPACE_DGL

// -----------------------------------------------------------------------
// NanoImage

/**
NanoVG Image class.

This implements NanoVG images as a C++ class where deletion is handled automatically.
Images need to be created within a NanoWidget class.
Images need to be created within a NanoVG or NanoWidget class.
*/
class NanoImage
{
@@ -54,7 +55,7 @@ public:
protected:
/**
Constructors are protected.
NanoImages must be created within a NanoWidget class.
NanoImages must be created within a NanoVG or NanoWidget class.
*/
NanoImage(const char* filename);
NanoImage(uchar* data, int ndata);
@@ -63,17 +64,19 @@ protected:
private:
NVGcontext* const fContext;
const int fImageId;
friend class NanoWidget;
friend class NanoVG;

DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(NanoImage)
DISTRHO_PREVENT_HEAP_ALLOCATION
};

// -----------------------------------------------------------------------
// NanoVG

/**
NanoVG Widget class.
NanoVG class.

This class implements the NanoVG drawing API inside a DGL Widget.
This class exposes the NanoVG drawing API.
All calls should be wrapped in beginFrame() & endFrame().

@section Color utils
@@ -165,7 +168,7 @@ private:

Note: currently only solid color fill is supported for text.
*/
class NanoWidget : public Widget
class NanoVG
{
public:
enum Align {
@@ -254,12 +257,12 @@ public:
/**
Constructor.
*/
NanoWidget(Window& parent);
NanoVG();

/**
Destructor.
*/
~NanoWidget() override;
~NanoVG();

/**
Get the NanoVG context.
@@ -275,7 +278,7 @@ protected:
Begin drawing a new frame.
@param withAlha Controls if drawing the shapes to the render target should be done using straight or pre-multiplied alpha.
*/
void beginFrame(Alpha alpha = PREMULTIPLIED_ALPHA);
void beginFrame(int width, int height, float scaleFactor = 1.0f, Alpha alpha = PREMULTIPLIED_ALPHA);

/**
Ends drawing flushing remaining render state.
@@ -744,6 +747,48 @@ protected:
private:
NVGcontext* fContext;

DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(NanoVG)
};

// -----------------------------------------------------------------------
// NanoWidget

/**
NanoVG Widget class.

This class implements the NanoVG drawing API inside a DGL Widget.
onDisplay is implemented internally.
*/
class NanoWidget : public Widget,
public NanoVG
{
public:
/**
Constructor.
*/
NanoWidget(Window& parent)
: Widget(parent),
NanoVG() {}

protected:
/**
New virtual onDisplay function.
@see onDisplay
*/
virtual void onNanoDisplay() = 0;

private:
/**
Widget display function.
Implemented internally to wrap begine/endFrame() automaticaly.
*/
void onDisplay() override
{
beginFrame(getWidth(), getHeight());
onNanoDisplay();
endFrame();
}

DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(NanoWidget)
};


dgl/src/NanoWidget.cpp → dgl/src/NanoVG.cpp View File

@@ -14,7 +14,7 @@
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#include "../NanoWidget.hpp"
#include "../NanoVG.hpp"

// -----------------------------------------------------------------------

@@ -40,33 +40,33 @@ START_NAMESPACE_DGL
// -----------------------------------------------------------------------
// Conversions

NanoWidget::Color::Color() noexcept
NanoVG::Color::Color() noexcept
: r(1.0f), g(1.0f), b(1.0f), a(1.0f) {}

NanoWidget::Color::Color(const NVGcolor& c) noexcept
NanoVG::Color::Color(const NVGcolor& c) noexcept
: r(c.r), g(c.g), b(c.b), a(c.a) {}

NanoWidget::Color::operator NVGcolor() const noexcept
NanoVG::Color::operator NVGcolor() const noexcept
{
NVGcolor nc = { r, g, b, a };
return nc;
}

NanoWidget::Paint::Paint() noexcept
NanoVG::Paint::Paint() noexcept
: radius(0.0f), feather(0.0f), innerColor(), outerColor(), imageId(0), repeat(REPEAT_NONE)
{
std::memset(xform, 0, sizeof(float)*6);
std::memset(extent, 0, sizeof(float)*2);
}

NanoWidget::Paint::Paint(const NVGpaint& p) noexcept
NanoVG::Paint::Paint(const NVGpaint& p) noexcept
: radius(p.radius), feather(p.feather), innerColor(p.innerColor), outerColor(p.outerColor), imageId(p.image), repeat(static_cast<PatternRepeat>(p.repeat))
{
std::memcpy(xform, p.xform, sizeof(float)*6);
std::memcpy(extent, p.extent, sizeof(float)*2);
}

NanoWidget::Paint::operator NVGpaint() const noexcept
NanoVG::Paint::operator NVGpaint() const noexcept
{
NVGpaint p;
p.radius = radius;
@@ -120,16 +120,15 @@ void NanoImage::updateImage(const uchar* data)
}

// -----------------------------------------------------------------------
// NanoWidget
// NanoVG

NanoWidget::NanoWidget(Window& parent)
: Widget(parent),
fContext(nvgCreateGL(512, 512, NVG_ANTIALIAS))
NanoVG::NanoVG()
: fContext(nvgCreateGL(512, 512, NVG_ANTIALIAS))
{
DISTRHO_SAFE_ASSERT_RETURN(fContext != nullptr,);
}

NanoWidget::~NanoWidget()
NanoVG::~NanoVG()
{
if (fContext == nullptr)
return;
@@ -139,12 +138,12 @@ NanoWidget::~NanoWidget()

// -----------------------------------------------------------------------

void NanoWidget::beginFrame(Alpha alpha)
void NanoVG::beginFrame(int width, int height, float scaleFactor, Alpha alpha)
{
nvgBeginFrame(fContext, getWidth(), getHeight(), 1.0f, static_cast<NVGalpha>(alpha));
nvgBeginFrame(fContext, width, height, scaleFactor, static_cast<NVGalpha>(alpha));
}

void NanoWidget::endFrame()
void NanoVG::endFrame()
{
nvgEndFrame(fContext);
}
@@ -152,37 +151,37 @@ void NanoWidget::endFrame()
// -----------------------------------------------------------------------
// Color utils

NanoWidget::Color NanoWidget::RGB(uchar r, uchar g, uchar b)
NanoVG::Color NanoVG::RGB(uchar r, uchar g, uchar b)
{
return nvgRGB(r, g, b);
}

NanoWidget::Color NanoWidget::RGBf(float r, float g, float b)
NanoVG::Color NanoVG::RGBf(float r, float g, float b)
{
return nvgRGBf(r, g, b);
}

NanoWidget::Color NanoWidget::RGBA(uchar r, uchar g, uchar b, uchar a)
NanoVG::Color NanoVG::RGBA(uchar r, uchar g, uchar b, uchar a)
{
return nvgRGBA(r, g, b, a);
}

NanoWidget::Color NanoWidget::RGBAf(float r, float g, float b, float a)
NanoVG::Color NanoVG::RGBAf(float r, float g, float b, float a)
{
return nvgRGBAf(r, g, b, a);
}

NanoWidget::Color NanoWidget::lerpRGBA(const Color& c0, const Color& c1, float u)
NanoVG::Color NanoVG::lerpRGBA(const Color& c0, const Color& c1, float u)
{
return nvgLerpRGBA(c0, c1, u);
}

NanoWidget::Color NanoWidget::HSL(float h, float s, float l)
NanoVG::Color NanoVG::HSL(float h, float s, float l)
{
return nvgHSL(h, s, l);
}

NanoWidget::Color NanoWidget::HSLA(float h, float s, float l, uchar a)
NanoVG::Color NanoVG::HSLA(float h, float s, float l, uchar a)
{
return nvgHSLA(h, s, l, a);
}
@@ -190,17 +189,17 @@ NanoWidget::Color NanoWidget::HSLA(float h, float s, float l, uchar a)
// -----------------------------------------------------------------------
// State Handling

void NanoWidget::save()
void NanoVG::save()
{
nvgSave(fContext);
}

void NanoWidget::restore()
void NanoVG::restore()
{
nvgRestore(fContext);
}

void NanoWidget::reset()
void NanoVG::reset()
{
nvgReset(fContext);
}
@@ -208,42 +207,42 @@ void NanoWidget::reset()
// -----------------------------------------------------------------------
// Render styles

void NanoWidget::strokeColor(const Color& color)
void NanoVG::strokeColor(const Color& color)
{
nvgStrokeColor(fContext, color);
}

void NanoWidget::strokePaint(const Paint& paint)
void NanoVG::strokePaint(const Paint& paint)
{
nvgStrokePaint(fContext, paint);
}

void NanoWidget::fillColor(const Color& color)
void NanoVG::fillColor(const Color& color)
{
nvgFillColor(fContext, color);
}

void NanoWidget::fillPaint(const Paint& paint)
void NanoVG::fillPaint(const Paint& paint)
{
nvgFillPaint(fContext, paint);
}

void NanoWidget::miterLimit(float limit)
void NanoVG::miterLimit(float limit)
{
nvgMiterLimit(fContext, limit);
}

void NanoWidget::strokeWidth(float size)
void NanoVG::strokeWidth(float size)
{
nvgStrokeWidth(fContext, size);
}

void NanoWidget::lineCap(NanoWidget::LineCap cap)
void NanoVG::lineCap(NanoVG::LineCap cap)
{
nvgLineCap(fContext, cap);
}

void NanoWidget::lineJoin(NanoWidget::LineCap join)
void NanoVG::lineJoin(NanoVG::LineCap join)
{
nvgLineJoin(fContext, join);
}
@@ -251,102 +250,102 @@ void NanoWidget::lineJoin(NanoWidget::LineCap join)
// -----------------------------------------------------------------------
// Transforms

void NanoWidget::resetTransform()
void NanoVG::resetTransform()
{
nvgResetTransform(fContext);
}

void NanoWidget::transform(float a, float b, float c, float d, float e, float f)
void NanoVG::transform(float a, float b, float c, float d, float e, float f)
{
nvgTransform(fContext, a, b, c, d, e, f);
}

void NanoWidget::translate(float x, float y)
void NanoVG::translate(float x, float y)
{
nvgTranslate(fContext, x, y);
}

void NanoWidget::rotate(float angle)
void NanoVG::rotate(float angle)
{
nvgRotate(fContext, angle);
}

void NanoWidget::skewX(float angle)
void NanoVG::skewX(float angle)
{
nvgSkewX(fContext, angle);
}

void NanoWidget::skewY(float angle)
void NanoVG::skewY(float angle)
{
nvgSkewY(fContext, angle);
}

void NanoWidget::scale(float x, float y)
void NanoVG::scale(float x, float y)
{
nvgScale(fContext, x, y);
}

void NanoWidget::currentTransform(float xform[6])
void NanoVG::currentTransform(float xform[6])
{
nvgCurrentTransform(fContext, xform);
}

void NanoWidget::transformIdentity(float dst[6])
void NanoVG::transformIdentity(float dst[6])
{
nvgTransformIdentity(dst);
}

void NanoWidget::transformTranslate(float dst[6], float tx, float ty)
void NanoVG::transformTranslate(float dst[6], float tx, float ty)
{
nvgTransformTranslate(dst, tx, ty);
}

void NanoWidget::transformScale(float dst[6], float sx, float sy)
void NanoVG::transformScale(float dst[6], float sx, float sy)
{
nvgTransformScale(dst, sx, sy);
}

void NanoWidget::transformRotate(float dst[6], float a)
void NanoVG::transformRotate(float dst[6], float a)
{
nvgTransformRotate(dst, a);
}

void NanoWidget::transformSkewX(float dst[6], float a)
void NanoVG::transformSkewX(float dst[6], float a)
{
nvgTransformSkewX(dst, a);
}

void NanoWidget::transformSkewY(float dst[6], float a)
void NanoVG::transformSkewY(float dst[6], float a)
{
nvgTransformSkewY(dst, a);
}

void NanoWidget::transformMultiply(float dst[6], const float src[6])
void NanoVG::transformMultiply(float dst[6], const float src[6])
{
nvgTransformMultiply(dst, src);
}

void NanoWidget::transformPremultiply(float dst[6], const float src[6])
void NanoVG::transformPremultiply(float dst[6], const float src[6])
{
nvgTransformPremultiply(dst, src);
}

int NanoWidget::transformInverse(float dst[6], const float src[6])
int NanoVG::transformInverse(float dst[6], const float src[6])
{
return nvgTransformInverse(dst, src);
}

void NanoWidget::transformPoint(float& dstx, float& dsty, const float xform[6], float srcx, float srcy)
void NanoVG::transformPoint(float& dstx, float& dsty, const float xform[6], float srcx, float srcy)
{
nvgTransformPoint(&dstx, &dsty, xform, srcx, srcy);
}

float NanoWidget::degToRad(float deg)
float NanoVG::degToRad(float deg)
{
return nvgDegToRad(deg);
}

float NanoWidget::radToDeg(float rad)
float NanoVG::radToDeg(float rad)
{
return nvgRadToDeg(rad);
}
@@ -354,19 +353,19 @@ float NanoWidget::radToDeg(float rad)
// -----------------------------------------------------------------------
// Images

NanoImage NanoWidget::createImage(const char* filename)
NanoImage NanoVG::createImage(const char* filename)
{
sLastContext = fContext;
return NanoImage(filename);
}

NanoImage NanoWidget::createImageMem(uchar* data, int ndata)
NanoImage NanoVG::createImageMem(uchar* data, int ndata)
{
sLastContext = fContext;
return NanoImage(data, ndata);
}

NanoImage NanoWidget::createImageRGBA(int w, int h, const uchar* data)
NanoImage NanoVG::createImageRGBA(int w, int h, const uchar* data)
{
sLastContext = fContext;
return NanoImage(w, h, data);
@@ -375,22 +374,22 @@ NanoImage NanoWidget::createImageRGBA(int w, int h, const uchar* data)
// -----------------------------------------------------------------------
// Paints

NanoWidget::Paint NanoWidget::linearGradient(float sx, float sy, float ex, float ey, const NanoWidget::Color& icol, const NanoWidget::Color& ocol)
NanoVG::Paint NanoVG::linearGradient(float sx, float sy, float ex, float ey, const NanoVG::Color& icol, const NanoVG::Color& ocol)
{
return nvgLinearGradient(fContext, sx, sy, ex, ey, icol, ocol);
}

NanoWidget::Paint NanoWidget::boxGradient(float x, float y, float w, float h, float r, float f, const NanoWidget::Color& icol, const NanoWidget::Color& ocol)
NanoVG::Paint NanoVG::boxGradient(float x, float y, float w, float h, float r, float f, const NanoVG::Color& icol, const NanoVG::Color& ocol)
{
return nvgBoxGradient(fContext, x, y, w, h, r, f, icol, ocol);
}

NanoWidget::Paint NanoWidget::radialGradient(float cx, float cy, float inr, float outr, const NanoWidget::Color& icol, const NanoWidget::Color& ocol)
NanoVG::Paint NanoVG::radialGradient(float cx, float cy, float inr, float outr, const NanoVG::Color& icol, const NanoVG::Color& ocol)
{
return nvgRadialGradient(fContext, cx, cy, inr, outr, icol, ocol);
}

NanoWidget::Paint NanoWidget::imagePattern(float ox, float oy, float ex, float ey, float angle, const NanoImage& image, NanoWidget::PatternRepeat repeat)
NanoVG::Paint NanoVG::imagePattern(float ox, float oy, float ex, float ey, float angle, const NanoImage& image, NanoVG::PatternRepeat repeat)
{
return nvgImagePattern(fContext, ox, oy, ex, ey, angle, image.fImageId, repeat);
}
@@ -398,12 +397,12 @@ NanoWidget::Paint NanoWidget::imagePattern(float ox, float oy, float ex, float e
// -----------------------------------------------------------------------
// Scissoring

void NanoWidget::scissor(float x, float y, float w, float h)
void NanoVG::scissor(float x, float y, float w, float h)
{
nvgScissor(fContext, x, y, w, h);
}

void NanoWidget::resetScissor()
void NanoVG::resetScissor()
{
nvgResetScissor(fContext);
}
@@ -411,72 +410,72 @@ void NanoWidget::resetScissor()
// -----------------------------------------------------------------------
// Paths

void NanoWidget::beginPath()
void NanoVG::beginPath()
{
nvgBeginPath(fContext);
}

void NanoWidget::moveTo(float x, float y)
void NanoVG::moveTo(float x, float y)
{
nvgMoveTo(fContext, x, y);
}

void NanoWidget::lineTo(float x, float y)
void NanoVG::lineTo(float x, float y)
{
nvgLineTo(fContext, x, y);
}

void NanoWidget::bezierTo(float c1x, float c1y, float c2x, float c2y, float x, float y)
void NanoVG::bezierTo(float c1x, float c1y, float c2x, float c2y, float x, float y)
{
nvgBezierTo(fContext, c1x, c1y, c2x, c2y, x, y);
}

void NanoWidget::arcTo(float x1, float y1, float x2, float y2, float radius)
void NanoVG::arcTo(float x1, float y1, float x2, float y2, float radius)
{
nvgArcTo(fContext, x1, y1, x2, y2, radius);
}

void NanoWidget::closePath()
void NanoVG::closePath()
{
nvgClosePath(fContext);
}

void NanoWidget::pathWinding(NanoWidget::Winding dir)
void NanoVG::pathWinding(NanoVG::Winding dir)
{
nvgPathWinding(fContext, dir);
}

void NanoWidget::arc(float cx, float cy, float r, float a0, float a1, NanoWidget::Winding dir)
void NanoVG::arc(float cx, float cy, float r, float a0, float a1, NanoVG::Winding dir)
{
nvgArc(fContext, cx, cy, r, a0, a1, dir);
}

void NanoWidget::rect(float x, float y, float w, float h)
void NanoVG::rect(float x, float y, float w, float h)
{
nvgRect(fContext, x, y, w, h);
}

void NanoWidget::roundedRect(float x, float y, float w, float h, float r)
void NanoVG::roundedRect(float x, float y, float w, float h, float r)
{
nvgRoundedRect(fContext, x, y, w, h, r);
}

void NanoWidget::ellipse(float cx, float cy, float rx, float ry)
void NanoVG::ellipse(float cx, float cy, float rx, float ry)
{
nvgEllipse(fContext, cx, cy, rx, ry);
}

void NanoWidget::circle(float cx, float cy, float r)
void NanoVG::circle(float cx, float cy, float r)
{
nvgCircle(fContext, cx, cy, r);
}

void NanoWidget::fill()
void NanoVG::fill()
{
nvgFill(fContext);
}

void NanoWidget::stroke()
void NanoVG::stroke()
{
nvgStroke(fContext);
}
@@ -484,67 +483,67 @@ void NanoWidget::stroke()
// -----------------------------------------------------------------------
// Text

NanoWidget::FontId NanoWidget::createFont(const char* name, const char* filename)
NanoVG::FontId NanoVG::createFont(const char* name, const char* filename)
{
return nvgCreateFont(fContext, name, filename);
}

NanoWidget::FontId NanoWidget::createFontMem(const char* name, uchar* data, int ndata, bool freeData)
NanoVG::FontId NanoVG::createFontMem(const char* name, uchar* data, int ndata, bool freeData)
{
return nvgCreateFontMem(fContext, name, data, ndata, freeData);
}

NanoWidget::FontId NanoWidget::findFont(const char* name)
NanoVG::FontId NanoVG::findFont(const char* name)
{
return nvgFindFont(fContext, name);
}

void NanoWidget::fontSize(float size)
void NanoVG::fontSize(float size)
{
nvgFontSize(fContext, size);
}

void NanoWidget::fontBlur(float blur)
void NanoVG::fontBlur(float blur)
{
nvgFontBlur(fContext, blur);
}

void NanoWidget::textLetterSpacing(float spacing)
void NanoVG::textLetterSpacing(float spacing)
{
nvgTextLetterSpacing(fContext, spacing);
}

void NanoWidget::textLineHeight(float lineHeight)
void NanoVG::textLineHeight(float lineHeight)
{
nvgTextLineHeight(fContext, lineHeight);
}

void NanoWidget::textAlign(NanoWidget::Align align)
void NanoVG::textAlign(NanoVG::Align align)
{
nvgTextAlign(fContext, align);
}

void NanoWidget::fontFaceId(FontId font)
void NanoVG::fontFaceId(FontId font)
{
nvgFontFaceId(fContext, font);
}

void NanoWidget::fontFace(const char* font)
void NanoVG::fontFace(const char* font)
{
nvgFontFace(fContext, font);
}

float NanoWidget::text(float x, float y, const char* string, const char* end)
float NanoVG::text(float x, float y, const char* string, const char* end)
{
return nvgText(fContext, x, y, string, end);
}

void NanoWidget::textBox(float x, float y, float breakRowWidth, const char* string, const char* end)
void NanoVG::textBox(float x, float y, float breakRowWidth, const char* string, const char* end)
{
nvgTextBox(fContext, x, y, breakRowWidth, string, end);
}

float NanoWidget::textBounds(float x, float y, const char* string, const char* end, Rectangle<float>& bounds)
float NanoVG::textBounds(float x, float y, const char* string, const char* end, Rectangle<float>& bounds)
{
float b[4];
const float ret = nvgTextBounds(fContext, x, y, string, end, b);
@@ -552,22 +551,22 @@ float NanoWidget::textBounds(float x, float y, const char* string, const char* e
return ret;
}

void NanoWidget::textBoxBounds(float x, float y, float breakRowWidth, const char* string, const char* end, float* bounds)
void NanoVG::textBoxBounds(float x, float y, float breakRowWidth, const char* string, const char* end, float* bounds)
{
nvgTextBoxBounds(fContext, x, y, breakRowWidth, string, end, bounds);
}

int NanoWidget::textGlyphPositions(float x, float y, const char* string, const char* end, NanoWidget::GlyphPosition* positions, int maxPositions)
int NanoVG::textGlyphPositions(float x, float y, const char* string, const char* end, NanoVG::GlyphPosition* positions, int maxPositions)
{
return nvgTextGlyphPositions(fContext, x, y, string, end, (NVGglyphPosition*)positions, maxPositions);
}

void NanoWidget::textMetrics(float* ascender, float* descender, float* lineh)
void NanoVG::textMetrics(float* ascender, float* descender, float* lineh)
{
nvgTextMetrics(fContext, ascender, descender, lineh);
}

int NanoWidget::textBreakLines(const char* string, const char* end, float breakRowWidth, NanoWidget::TextRow* rows, int maxRows)
int NanoVG::textBreakLines(const char* string, const char* end, float breakRowWidth, NanoVG::TextRow* rows, int maxRows)
{
return nvgTextBreakLines(fContext, string, end, breakRowWidth, (NVGtextRow*)rows, maxRows);
}

+ 4
- 1
dgl/src/nanovg/fontstash.h View File

@@ -837,6 +837,7 @@ int fonsAddFont(struct FONScontext* stash, const char* name, const char* path)
FILE* fp = 0;
int dataSize = 0;
unsigned char* data = NULL;
size_t r;

// Read in the font data.
fp = fopen(path, "rb");
@@ -846,12 +847,14 @@ int fonsAddFont(struct FONScontext* stash, const char* name, const char* path)
fseek(fp,0,SEEK_SET);
data = (unsigned char*)malloc(dataSize);
if (data == NULL) goto error;
fread(data, 1, dataSize, fp);
r = fread(data, 1, dataSize, fp);
fclose(fp);
fp = 0;

return fonsAddFontMem(stash, name, data, dataSize, 1);

NVG_NOTUSED(r);

error:
if (data) free(data);
if (fp) fclose(fp);


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