1// Copyright 2014 PDFium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7#ifndef	_FPDFEDIT_H_
8#define	_FPDFEDIT_H_
9
10#include "fpdfview.h"
11
12// Define all types used in the SDK. Note they can be simply regarded as opaque pointers
13// or long integer numbers.
14
15#define FPDF_ARGB(a,r,g,b)		((((FX_DWORD)(((FX_BYTE)(b)|((FX_WORD)((FX_BYTE)(g))<<8))|(((FX_DWORD)(FX_BYTE)(r))<<16)))) | (((FX_DWORD)(FX_BYTE)(a))<<24))
16#define FPDF_GetBValue(argb)    ((FX_BYTE)(argb))
17#define FPDF_GetGValue(argb)    ((FX_BYTE)(((FX_WORD)(argb)) >> 8))
18#define FPDF_GetRValue(argb)    ((FX_BYTE)((argb)>>16))
19#define FPDF_GetAValue(argb)    ((FX_BYTE)((argb)>>24))
20
21#ifdef __cplusplus
22extern "C" {
23#endif
24
25//////////////////////////////////////////////////////////////////////
26//
27// Document functions
28//
29//////////////////////////////////////////////////////////////////////
30
31// Function: FPDF_CreateNewDocument
32//			Create a new PDF document.
33// Parameters:
34//			None.
35// Return value:
36//			A handle to a document. If failed, NULL is returned.
37DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_CreateNewDocument();
38
39//////////////////////////////////////////////////////////////////////
40//
41// Page functions
42//
43//////////////////////////////////////////////////////////////////////
44
45// Function: FPDFPage_New
46//			Construct an empty page.
47// Parameters:
48//			document	-	Handle to document. Returned by FPDF_LoadDocument and FPDF_CreateNewDocument.
49//			page_index	-	The index of a page.
50//			width		-	The page width.
51//			height		-	The page height.
52// Return value:
53//			The handle to the page.
54// Comments:
55//			Loaded page can be deleted by FPDFPage_Delete.
56DLLEXPORT FPDF_PAGE STDCALL FPDFPage_New(FPDF_DOCUMENT document, int page_index, double width, double height);
57
58// Function: FPDFPage_Delete
59//			Delete a PDF page.
60// Parameters:
61//			document	-	Handle to document. Returned by FPDF_LoadDocument and FPDF_CreateNewDocument.
62//			page_index	-	The index of a page.
63// Return value:
64//			None.
65DLLEXPORT void STDCALL FPDFPage_Delete(FPDF_DOCUMENT document, int page_index);
66
67// Function: FPDFPage_GetRotation
68//			Get the page rotation. One of following values will be returned: 0(0), 1(90), 2(180), 3(270).
69// Parameters:
70//			page		-	Handle to a page. Returned by FPDFPage_New.
71// Return value:
72//			The PDF page rotation.
73// Comment:
74//			The PDF page rotation is rotated clockwise.
75DLLEXPORT int STDCALL FPDFPage_GetRotation(FPDF_PAGE page);
76
77// Function: FPDFPage_InsertObject
78//			Insert an object to the page. The page object is automatically freed.
79// Parameters:
80//			page		-	Handle to a page. Returned by FPDFPage_New.
81//			page_obj	-	Handle to a page object. Returned by FPDFPageObj_NewTextObj,FPDFPageObj_NewTextObjEx and
82//							FPDFPageObj_NewPathObj.
83// Return value:
84//			None.
85DLLEXPORT void STDCALL FPDFPage_InsertObject(FPDF_PAGE page, FPDF_PAGEOBJECT page_obj);
86
87// Function: FPDFPage_CountObject
88//			Get number of page objects inside the page.
89// Parameters:
90//			page		-	Handle to a page. Returned by FPDFPage_New.
91// Return value:
92//			The number of the page object.
93DLLEXPORT int STDCALL FPDFPage_CountObject(FPDF_PAGE page);
94
95// Function: FPDFPage_GetObject
96//			Get page object by index.
97// Parameters:
98//			page		-	Handle to a page. Returned by FPDFPage_New.
99//			index		-	The index of a page object.
100// Return value:
101//			The handle of the page object. Null for failed.
102DLLEXPORT FPDF_PAGEOBJECT STDCALL FPDFPage_GetObject(FPDF_PAGE page, int index);
103
104// Function: FPDFPage_HasTransparency
105//			Check that whether the content of specified PDF page contains transparency.
106// Parameters:
107//			page		-	Handle to a page. Returned by FPDFPage_New or FPDF_LoadPage.
108// Return value:
109//			TRUE means that the PDF page does contains transparency.
110//			Otherwise, returns FALSE.
111DLLEXPORT FPDF_BOOL STDCALL FPDFPage_HasTransparency(FPDF_PAGE page);
112
113// Function: FPDFPage_GenerateContent
114//			Generate PDF Page content.
115// Parameters:
116//			page		-	Handle to a page. Returned by FPDFPage_New.
117// Return value:
118//			True if successful, false otherwise.
119// Comment:
120//			Before you save the page to a file, or reload the page, you must call the FPDFPage_GenerateContent function.
121//			Or the changed information will be lost.
122DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GenerateContent(FPDF_PAGE page);
123
124//////////////////////////////////////////////////////////////////////
125//
126// Page Object functions
127//
128//////////////////////////////////////////////////////////////////////
129
130// Function: FPDFPageObj_HasTransparency
131//			Check that whether the specified PDF page object contains transparency.
132// Parameters:
133//			pageObject	-	Handle to a page object.
134// Return value:
135//			TRUE means that the PDF page object does contains transparency.
136//			Otherwise, returns FALSE.
137DLLEXPORT FPDF_BOOL STDCALL FPDFPageObj_HasTransparency(FPDF_PAGEOBJECT pageObject);
138
139// Function: FPDFPageObj_Transform
140//			Transform (scale, rotate, shear, move) page object.
141// Parameters:
142//			page_object	-	Handle to a page object. Returned by FPDFPageObj_NewImageObj.
143//			a			-	The coefficient "a" of the matrix.
144//			b			-	The	coefficient "b" of the matrix.
145//			c			-	The coefficient "c" of the matrix.
146//			d			-	The coefficient "d" of the matrix.
147//			e			-	The coefficient "e" of the matrix.
148//			f			-	The coefficient "f" of the matrix.
149// Return value:
150//			None.
151DLLEXPORT void STDCALL FPDFPageObj_Transform(FPDF_PAGEOBJECT page_object,
152							double a, double b, double c, double d, double e, double f);
153
154// Function: FPDFPage_TransformAnnots
155//			Transform (scale, rotate, shear, move) all annots in a page.
156// Parameters:
157//			page		-	Handle to a page.
158//			a			-	The coefficient "a" of the matrix.
159//			b			-	The	coefficient "b" of the matrix.
160//			c			-	The coefficient "c" of the matrix.
161//			d			-	The coefficient "d" of the matrix.
162//			e			-	The coefficient "e" of the matrix.
163//			f			-	The coefficient "f" of the matrix.
164// Return value:
165//			None.
166DLLEXPORT void STDCALL FPDFPage_TransformAnnots(FPDF_PAGE page,
167											 double a, double b, double c, double d, double e, double f);
168
169// The page object constants.
170#define FPDF_PAGEOBJ_TEXT		1
171#define FPDF_PAGEOBJ_PATH		2
172#define FPDF_PAGEOBJ_IMAGE		3
173#define FPDF_PAGEOBJ_SHADING	4
174#define FPDF_PAGEOBJ_FORM		5
175
176//////////////////////////////////////////////////////////////////////
177//
178// Image functions
179//
180//////////////////////////////////////////////////////////////////////
181
182// Function: FPDFPageObj_NewImgeObj
183//			Create a new Image Object.
184// Parameters:
185//			document		-	Handle to document. Returned by FPDF_LoadDocument or FPDF_CreateNewDocument function.
186// Return Value:
187//			Handle of image object.
188DLLEXPORT FPDF_PAGEOBJECT STDCALL FPDFPageObj_NewImgeObj(FPDF_DOCUMENT document);
189
190
191// Function: FPDFImageObj_LoadJpegFile
192//			Load Image from a JPEG image file and then set it to an image object.
193// Parameters:
194//			pages			-	Pointers to the start of all loaded pages, could be NULL.
195//			nCount			-	Number of pages, could be 0.
196//			image_object	-	Handle of image object returned by FPDFPageObj_NewImgeObj.
197//			fileAccess		-	The custom file access handler, which specifies the JPEG image file.
198//	Return Value:
199//			TRUE if successful, FALSE otherwise.
200//  Note:
201//			The image object might already has an associated image, which is shared and cached by the loaded pages, In this case, we need to clear the cache of image for all the loaded pages.
202//			Pass pages and count to this API to clear the image cache.
203DLLEXPORT FPDF_BOOL STDCALL FPDFImageObj_LoadJpegFile(FPDF_PAGE* pages, int nCount,FPDF_PAGEOBJECT image_object, FPDF_FILEACCESS* fileAccess);
204
205
206// Function: FPDFImageObj_SetMatrix
207//			Set the matrix of an image object.
208// Parameters:
209//			image_object	-	Handle of image object returned by FPDFPageObj_NewImgeObj.
210//			a				-	The coefficient "a" of the matrix.
211//			b				-	The coefficient "b" of the matrix.
212//			c				-	The coefficient "c" of the matrix.
213//			d				-	The coefficient "d" of the matrix.
214//			e				-	The coefficient "e" of the matrix.
215//			f				-	The coefficient "f" of the matrix.
216// Return value:
217//			TRUE if successful, FALSE otherwise.
218DLLEXPORT FPDF_BOOL STDCALL FPDFImageObj_SetMatrix(FPDF_PAGEOBJECT image_object,
219											 double a, double b, double c, double d, double e, double f);
220
221// Function: FPDFImageObj_SetBitmap
222//			Set the bitmap to an image object.
223// Parameters:
224//			pages			-	Pointer's to the start of all loaded pages.
225//			nCount			-	Number of pages.
226//			image_object	-	Handle of image object returned by FPDFPageObj_NewImgeObj.
227//			bitmap			-	The handle of the bitmap which you want to set it to the image object.
228// Return value:
229//			TRUE if successful, FALSE otherwise.
230DLLEXPORT FPDF_BOOL STDCALL FPDFImageObj_SetBitmap(FPDF_PAGE* pages,int nCount,FPDF_PAGEOBJECT image_object, FPDF_BITMAP bitmap);
231
232#ifdef __cplusplus
233}
234#endif
235#endif // _FPDFEDIT_H_
236