IOS library to convert powerpoint presentations into images

Question

after a lot of searching and still searching, i\'m unable to find the way to extract the slides out of powerpoint presentations. Need help, if they know anything related thi

Answer 1

I am not sure whether this is still required. but anyways, this is how I have implemented

(1) Use UIWebView to display the content of the PPT. The well formed (!) HTML allows you to parse it. Get the html using

NSString *htmlContent = [self.webView stringByEvaluatingJavaScriptFromString:@"document.body.innerHTML"];

(2) Count the number of div class = 'slide to get the slide count

(4) You need to parse the HTML to get the styles and div using the below code

(5) Get all the styles

- (NSString *)getStyles:(int)slideCount forView:(UIWebView *)view {

    NSString *getElementByTag = [[NSString alloc] init];
    NSString *allStyles = [[NSString alloc] init];

    for (int i = 0; i < slideCount; i++) {
        getElementByTag = [NSString stringWithFormat:@"document.getElementsByTagName('style')[%d].innerHTML", i];
        NSString *style =  [[view stringByEvaluatingJavaScriptFromString:getElementByTag] stringByAppendingString:@"\n"];
        allStyles = [allStyles stringByAppendingString:style];
    }

    allStyles = [@"<style type='text/css'>" stringByAppendingString: allStyles];

    return [allStyles stringByAppendingString:@"</style>"];
}

(6) Concatenate all the styles from step 5 with div tag content. Define a NSMutableArray variable to to store all slides with styles for future reference. Define NSMutableArray *slides to store all the slides

- (void)makeSlides:(int)slideCount forView:(UIWebView *)view {

    self.slides = [[NSMutableArray alloc] init];

    for (int i = 0; i < slideCount; i++) {
        NSString *slideBody = [NSString stringWithFormat:@"document.getElementsByClassName('slide')[%d].innerHTML", i];
        NSString *div = [view stringByEvaluatingJavaScriptFromString:slideBody];

        NSString *slide = [self.slideStyles stringByAppendingString:div];
        [self.slides addObject:slide];
    }
}

Hope this helps