Page objects

Foxit PDF SDK for iOS provides graphics object APIs via Core SDK to add, modify, and remove text, image, and path objects on pages.

Core classes

Class	Description
FSGraphicsObjects	Page graphics collection from [FSPDFPage getGraphicsObjects]
FSGraphicsObject	Graphics object base class
FSTextObject	Text object
FSImageObject	Image object from bitmap or image
FSPathObject	Path object for custom shapes

Example: add a text object

#import <FoxitRDK/FSPDFObjC.h>

FSPDFDoc *doc = [[FSPDFDoc alloc] initWithPath:@"path/to/Sample.pdf"];
[doc load:nil];
FSPDFPage *page = [doc getPage:0];
[page startParse:FSPDFPageParsePageNormal pause:nil is_reparse:NO];

// Create text object
FSTextObject *textObj = [FSTextObject create];

// Text
[textObj setText:@"Hello, Foxit!"];

// Font and style
FSTextState *textState = [[FSTextState alloc] init];
[textState setFont:[[FSFont alloc] initWithStandard_id:FSFontStdIDHelvetica]];
[textState setFont_size:24.0f];
[textState setTextcolor:0xFF000000];
[textObj setTextState:page text_state:textState is_italic:NO weight:400];

// Position
FSMatrix2D *matrix = [[FSMatrix2D alloc] initWithA1:1 b1:0 c1:0 d1:1 e1:100 f1:700];
[textObj setMatrix:matrix];

// Add to page
FSGraphicsObjects *graphicsObjects = [page getGraphicsObjects];
[graphicsObjects insertObject:FSGraphicsObject.e_TypeText index:-1 graphics_object:textObj];
[page generateContent];

[doc saveAs:@"path/to/output.pdf" saveFlags:FSPDFDocSaveFlagNormal];

Example: add an image object

// Create image object
FSImageObject *imageObj = [FSImageObject create:doc];

// Load image
FSImage *image = [[FSImage alloc] initWithPath:@"path/to/image.png"];
[imageObj setImage:image frame_index:0];

// Position and size
FSMatrix2D *matrix = [[FSMatrix2D alloc] initWithA1:200 b1:0 c1:0 d1:200 e1:100 f1:400];
[imageObj setMatrix:matrix];

// Add to page
FSGraphicsObjects *graphicsObjects = [page getGraphicsObjects];
[graphicsObjects insertObject:FSGraphicsObject.e_TypeImage index:-1 graphics_object:imageObj];
[page generateContent];

[doc saveAs:@"path/to/output.pdf" saveFlags:FSPDFDocSaveFlagNormal];

API reference

See the API reference for FSTextObject, FSImageObject, FSPathObject, and FSGraphicsObjects.