Merge pull request #47 from klippa-app/feature/implement-fpdf_edit

Implement fpdf_edit

README.md

@@ -16,7 +16,7 @@
 
 * Option between single-threaded and multi-threaded (through subprocesses), while keeping the same interface
 * This library will handle all complicated cgo gymnastics for you
-* The goal is to implement all PDFium public API methods (including [experimental](#experimental)), current progress: 50%
+* The goal is to implement all PDFium public API methods (including [experimental](#experimental)), current progress: 75%
 * Current PDFium methods exposed, no cgo required
     * PDFium instance configuration (sandbox policy, fonts)
     * Document loading (from bytes, path or io.ReadSeeker)
@@ -40,8 +40,8 @@
     * Progressive rendering
     * Document loading through data availability (loading data as needed)
     * Struct trees
+    * Page/Page object editing
 * Methods to be implemented:
-    * Page/Page object editing (fpdf_edit.h)
     * Form filling (fpdf_formfill.h)
     * Annotations (fpdf_annot.h)
 * Methods that won't be implemented for now:

code_generation/templates/multi_threaded.go.tmpl

@@ -54,6 +54,18 @@ func (i *pdfiumInstance) {{ $method.Name }}(request *requests.{{ $method.Input }
 		return nil, errors.New("using a file-writer is not supported on multi-threaded usage")
 	}
 
+	return i.worker.plugin.{{ $method.Name }}(request)
+	{{- else if eq $method.Name "FPDFImageObj_LoadJpegFile" -}}
+	if request.FileReader != nil {
+		return nil, errors.New("using a file-reader is not supported on multi-threaded usage")
+	}
+
+	return i.worker.plugin.{{ $method.Name }}(request)
+	{{- else if eq $method.Name "FPDFImageObj_LoadJpegFileInline" -}}
+	if request.FileReader != nil {
+		return nil, errors.New("using a file-reader is not supported on multi-threaded usage")
+	}
+
 	return i.worker.plugin.{{ $method.Name }}(request)
 	{{- else -}}
 	return i.worker.plugin.{{ $method.Name }}(request)

enums/enums.go

@@ -216,3 +216,93 @@ const (
 	PDF_FILEAVAIL_FORM_AVAIL    PDF_FILEAVAIL_FORM = 1
 	PDF_FILEAVAIL_FORM_NOTEXIST PDF_FILEAVAIL_FORM = 2
 )
+
+type PDF_BLEND_MODE string
+
+const (
+	PDF_BLEND_MODE_COLOR       PDF_BLEND_MODE = "Color"
+	PDF_BLEND_MODE_COLOR_BURN  PDF_BLEND_MODE = "ColorBurn"
+	PDF_BLEND_MODE_COLOR_DODGE PDF_BLEND_MODE = "ColorDodge"
+	PDF_BLEND_MODE_DARKEN      PDF_BLEND_MODE = "Darken"
+	PDF_BLEND_MODE_DIFFERENCE  PDF_BLEND_MODE = "Difference"
+	PDF_BLEND_MODE_EXCLUSION   PDF_BLEND_MODE = "Exclusion"
+	PDF_BLEND_MODE_HARD_LIGHT  PDF_BLEND_MODE = "HardLight"
+	PDF_BLEND_MODE_HUE         PDF_BLEND_MODE = "Hue"
+	PDF_BLEND_MODE_LIGHTEN     PDF_BLEND_MODE = "Lighten"
+	PDF_BLEND_MODE_LUMINOSITY  PDF_BLEND_MODE = "Luminosity"
+	PDF_BLEND_MODE_MULTIPLY    PDF_BLEND_MODE = "Multiply"
+	PDF_BLEND_MODE_NORMAL      PDF_BLEND_MODE = "Normal"
+	PDF_BLEND_MODE_OVERLAY     PDF_BLEND_MODE = "Overlay"
+	PDF_BLEND_MODE_SATURATION  PDF_BLEND_MODE = "Saturation"
+	PDF_BLEND_MODE_SCREEN      PDF_BLEND_MODE = "Screen"
+	PDF_BLEND_MODE_SOFT_LIGHT  PDF_BLEND_MODE = "SoftLight"
+)
+
+type FPDF_FILLMODE int
+
+const (
+	FPDF_FILLMODE_NONE      FPDF_FILLMODE = 0
+	FPDF_FILLMODE_ALTERNATE FPDF_FILLMODE = 1
+	FPDF_FILLMODE_WINDING   FPDF_FILLMODE = 2
+)
+
+type FPDF_FONT int
+
+const (
+	FPDF_FONT_TYPE1    FPDF_FONT = 1
+	FPDF_FONT_TRUETYPE FPDF_FONT = 2
+)
+
+type FPDF_PAGEOBJ int
+
+const (
+	FPDF_PAGEOBJ_UNKNOWN FPDF_PAGEOBJ = 0
+	FPDF_PAGEOBJ_TEXT    FPDF_PAGEOBJ = 1
+	FPDF_PAGEOBJ_PATH    FPDF_PAGEOBJ = 2
+	FPDF_PAGEOBJ_IMAGE   FPDF_PAGEOBJ = 3
+	FPDF_PAGEOBJ_SHADING FPDF_PAGEOBJ = 4
+	FPDF_PAGEOBJ_FORM    FPDF_PAGEOBJ = 5
+)
+
+type FPDF_LINEJOIN int
+
+const (
+	FPDF_LINEJOIN_MITER FPDF_LINEJOIN = 0
+	FPDF_LINEJOIN_ROUND FPDF_LINEJOIN = 1
+	FPDF_LINEJOIN_BEVEL FPDF_LINEJOIN = 2
+)
+
+type FPDF_LINECAP int
+
+const (
+	FPDF_LINECAP_BUTT             FPDF_LINECAP = 0
+	FPDF_LINECAP_ROUND            FPDF_LINECAP = 1
+	FPDF_LINECAP_PROJECTING_SQUAR FPDF_LINECAP = 2
+)
+
+type FPDF_SEGMENT int
+
+const (
+	FPDF_SEGMENT_UNKNOWN  FPDF_SEGMENT = -1
+	FPDF_SEGMENT_LINETO   FPDF_SEGMENT = 0
+	FPDF_SEGMENT_BEZIERTO FPDF_SEGMENT = 1
+	FPDF_SEGMENT_MOVETO   FPDF_SEGMENT = 2
+)
+
+// Refer to PDF Reference version 1.7 table 4.12 for all color space families.
+type FPDF_COLORSPACE int
+
+const (
+	FPDF_COLORSPACE_UNKNOWN    FPDF_COLORSPACE = 0
+	FPDF_COLORSPACE_DEVICEGRAY FPDF_COLORSPACE = 1
+	FPDF_COLORSPACE_DEVICERGB  FPDF_COLORSPACE = 2
+	FPDF_COLORSPACE_DEVICECMYK FPDF_COLORSPACE = 3
+	FPDF_COLORSPACE_CALGRAY    FPDF_COLORSPACE = 4
+	FPDF_COLORSPACE_CALRGB     FPDF_COLORSPACE = 5
+	FPDF_COLORSPACE_LAB        FPDF_COLORSPACE = 6
+	FPDF_COLORSPACE_ICCBASED   FPDF_COLORSPACE = 7
+	FPDF_COLORSPACE_SEPARATION FPDF_COLORSPACE = 8
+	FPDF_COLORSPACE_DEVICEN    FPDF_COLORSPACE = 9
+	FPDF_COLORSPACE_INDEXED    FPDF_COLORSPACE = 10
+	FPDF_COLORSPACE_PATTERN    FPDF_COLORSPACE = 11
+)