1 files changed, 275 insertions, 0 deletions
diff --git a/vendor/github.com/gotk3/gotk3/cairo/surface.go b/vendor/github.com/gotk3/gotk3/cairo/surface.go
new file mode 100644
index 0000000..c9bd55a
--- /dev/null
+++ b/vendor/github.com/gotk3/gotk3/cairo/surface.go
@@ -0,0 +1,275 @@
+package cairo
+
+// #include <stdlib.h>
+// #include <cairo.h>
+// #include <cairo-gobject.h>
+// #include <cairo-pdf.h>
+import "C"
+
+import (
+	"runtime"
+	"unsafe"
+)
+
+// TODO(jrick) SetUserData (depends on UserDataKey and DestroyFunc)
+
+// TODO(jrick) GetUserData (depends on UserDataKey)
+
+/*
+ * cairo_surface_t
+ */
+
+// Surface is a representation of Cairo's cairo_surface_t.
+type Surface struct {
+	surface *C.cairo_surface_t
+}
+
+func NewSurfaceFromPNG(fileName string) (*Surface, error) {
+
+	cstr := C.CString(fileName)
+	defer C.free(unsafe.Pointer(cstr))
+
+	surfaceNative := C.cairo_image_surface_create_from_png(cstr)
+
+	status := Status(C.cairo_surface_status(surfaceNative))
+	if status != STATUS_SUCCESS {
+		return nil, ErrorStatus(status)
+	}
+
+	return &Surface{surfaceNative}, nil
+}
+
+// CreateImageSurface is a wrapper around cairo_image_surface_create().
+func CreateImageSurface(format Format, width, height int) *Surface {
+	c := C.cairo_image_surface_create(C.cairo_format_t(format),
+		C.int(width), C.int(height))
+	s := wrapSurface(c)
+	runtime.SetFinalizer(s, (*Surface).destroy)
+	return s
+}
+
+/// Create a new PDF surface.
+func CreatePDFSurface(fileName string, width float64, height float64) (*Surface, error) {
+	cstr := C.CString(fileName)
+	defer C.free(unsafe.Pointer(cstr))
+
+	surfaceNative := C.cairo_pdf_surface_create(cstr, C.double(width), C.double(height))
+
+	status := Status(C.cairo_surface_status(surfaceNative))
+	if status != STATUS_SUCCESS {
+		return nil, ErrorStatus(status)
+	}
+
+	s := wrapSurface(surfaceNative)
+
+	runtime.SetFinalizer(s, (*Surface).destroy)
+
+	return s, nil
+}
+
+// native returns a pointer to the underlying cairo_surface_t.
+func (v *Surface) native() *C.cairo_surface_t {
+	if v == nil {
+		return nil
+	}
+	return v.surface
+}
+
+// Native returns a pointer to the underlying cairo_surface_t.
+func (v *Surface) Native() uintptr {
+	return uintptr(unsafe.Pointer(v.native()))
+}
+
+func marshalSurface(p uintptr) (interface{}, error) {
+	c := C.g_value_get_boxed((*C.GValue)(unsafe.Pointer(p)))
+	return WrapSurface(uintptr(c)), nil
+}
+
+func wrapSurface(surface *C.cairo_surface_t) *Surface {
+	return &Surface{surface}
+}
+
+// NewSurface creates a gotk3 cairo Surface from a pointer to a
+// C cairo_surface_t.  This is primarily designed for use with other
+// gotk3 packages and should be avoided by applications.
+func NewSurface(s uintptr, needsRef bool) *Surface {
+	surface := WrapSurface(s)
+	if needsRef {
+		surface.reference()
+	}
+	runtime.SetFinalizer(surface, (*Surface).destroy)
+	return surface
+}
+
+func WrapSurface(s uintptr) *Surface {
+	ptr := (*C.cairo_surface_t)(unsafe.Pointer(s))
+	return wrapSurface(ptr)
+}
+
+// Closes the surface. The surface must not be used afterwards.
+func (v *Surface) Close() {
+	v.destroy()
+}
+
+// CreateSimilar is a wrapper around cairo_surface_create_similar().
+func (v *Surface) CreateSimilar(content Content, width, height int) *Surface {
+	c := C.cairo_surface_create_similar(v.native(),
+		C.cairo_content_t(content), C.int(width), C.int(height))
+	s := wrapSurface(c)
+	runtime.SetFinalizer(s, (*Surface).destroy)
+	return s
+}
+
+// TODO cairo_surface_create_similar_image (since 1.12)
+
+// CreateForRectangle is a wrapper around cairo_surface_create_for_rectangle().
+func (v *Surface) CreateForRectangle(x, y, width, height float64) *Surface {
+	c := C.cairo_surface_create_for_rectangle(v.native(), C.double(x),
+		C.double(y), C.double(width), C.double(height))
+	s := wrapSurface(c)
+	runtime.SetFinalizer(s, (*Surface).destroy)
+	return s
+}
+
+// reference is a wrapper around cairo_surface_reference().
+func (v *Surface) reference() {
+	v.surface = C.cairo_surface_reference(v.native())
+}
+
+// destroy is a wrapper around cairo_surface_destroy().
+func (v *Surface) destroy() {
+	if v.surface != nil {
+		C.cairo_surface_destroy(v.native())
+		v.surface = nil
+	}
+}
+
+// Status is a wrapper around cairo_surface_status().
+func (v *Surface) Status() Status {
+	c := C.cairo_surface_status(v.native())
+	return Status(c)
+}
+
+// Flush is a wrapper around cairo_surface_flush().
+func (v *Surface) Flush() {
+	C.cairo_surface_flush(v.native())
+}
+
+// TODO(jrick) GetDevice (requires Device bindings)
+
+// TODO(jrick) GetFontOptions (require FontOptions bindings)
+
+// TODO(jrick) GetContent (requires Content bindings)
+
+// MarkDirty is a wrapper around cairo_surface_mark_dirty().
+func (v *Surface) MarkDirty() {
+	C.cairo_surface_mark_dirty(v.native())
+}
+
+// MarkDirtyRectangle is a wrapper around cairo_surface_mark_dirty_rectangle().
+func (v *Surface) MarkDirtyRectangle(x, y, width, height int) {
+	C.cairo_surface_mark_dirty_rectangle(v.native(), C.int(x), C.int(y),
+		C.int(width), C.int(height))
+}
+
+// SetDeviceOffset is a wrapper around cairo_surface_set_device_offset().
+func (v *Surface) SetDeviceOffset(x, y float64) {
+	C.cairo_surface_set_device_offset(v.native(), C.double(x), C.double(y))
+}
+
+// GetDeviceOffset is a wrapper around cairo_surface_get_device_offset().
+func (v *Surface) GetDeviceOffset() (x, y float64) {
+	var xOffset, yOffset C.double
+	C.cairo_surface_get_device_offset(v.native(), &xOffset, &yOffset)
+	return float64(xOffset), float64(yOffset)
+}
+
+// SetFallbackResolution is a wrapper around
+// cairo_surface_set_fallback_resolution().
+func (v *Surface) SetFallbackResolution(xPPI, yPPI float64) {
+	C.cairo_surface_set_fallback_resolution(v.native(), C.double(xPPI),
+		C.double(yPPI))
+}
+
+// GetFallbackResolution is a wrapper around
+// cairo_surface_get_fallback_resolution().
+func (v *Surface) GetFallbackResolution() (xPPI, yPPI float64) {
+	var x, y C.double
+	C.cairo_surface_get_fallback_resolution(v.native(), &x, &y)
+	return float64(x), float64(y)
+}
+
+// GetType is a wrapper around cairo_surface_get_type().
+func (v *Surface) GetType() SurfaceType {
+	c := C.cairo_surface_get_type(v.native())
+	return SurfaceType(c)
+}
+
+// TODO(jrick) SetUserData (depends on UserDataKey and DestroyFunc)
+
+// TODO(jrick) GetUserData (depends on UserDataKey)
+
+// CopyPage is a wrapper around cairo_surface_copy_page().
+func (v *Surface) CopyPage() {
+	C.cairo_surface_copy_page(v.native())
+}
+
+// ShowPage is a wrapper around cairo_surface_show_page().
+func (v *Surface) ShowPage() {
+	C.cairo_surface_show_page(v.native())
+}
+
+// HasShowTextGlyphs is a wrapper around cairo_surface_has_show_text_glyphs().
+func (v *Surface) HasShowTextGlyphs() bool {
+	c := C.cairo_surface_has_show_text_glyphs(v.native())
+	return gobool(c)
+}
+
+// TODO(jrick) SetMimeData (depends on DestroyFunc)
+
+// GetMimeData is a wrapper around cairo_surface_get_mime_data().  The
+// returned mimetype data is returned as a Go byte slice.
+func (v *Surface) GetMimeData(mimeType MimeType) []byte {
+	cstr := C.CString(string(mimeType))
+	defer C.free(unsafe.Pointer(cstr))
+	var data *C.uchar
+	var length C.ulong
+	C.cairo_surface_get_mime_data(v.native(), cstr, &data, &length)
+	return C.GoBytes(unsafe.Pointer(data), C.int(length))
+}
+
+// WriteToPNG is a wrapper around cairo_surface_write_png(). It writes the Cairo
+// surface to the given file in PNG format.
+func (v *Surface) WriteToPNG(fileName string) error {
+	cstr := C.CString(fileName)
+	defer C.free(unsafe.Pointer(cstr))
+
+	status := Status(C.cairo_surface_write_to_png(v.surface, cstr))
+
+	if status != STATUS_SUCCESS {
+		return ErrorStatus(status)
+	}
+
+	return nil
+}
+
+// TODO(jrick) SupportsMimeType (since 1.12)
+
+// TODO(jrick) MapToImage (since 1.12)
+
+// TODO(jrick) UnmapImage (since 1.12)
+
+// GetHeight is a wrapper around cairo_image_surface_get_height().
+func (v *Surface) GetHeight() int {
+	return int(C.cairo_image_surface_get_height(v.surface))
+}
+
+// GetWidth is a wrapper around cairo_image_surface_get_width().
+func (v *Surface) GetWidth() int {
+	return int(C.cairo_image_surface_get_width(v.surface))
+}
+
+// GetData is a wrapper around cairo_image_surface_get_data().
+func (v *Surface) GetData() unsafe.Pointer {
+	return unsafe.Pointer(C.cairo_image_surface_get_data(v.surface))
+}