r4267 adamblokus - in /branches/adamblokus/netsurf/pdf: TODO pdf_plotters.c

Author: adamblokus Date: Fri Jun 6 08:36:34 2008 New Revision: 4267 URL: http://source.netsurf-browser.org?rev=4267&view=rev Log: Added handling NULL-returns from all mallocs. Added plot_bitmap_tile handling. Changed code style a little. Modified: branches/adamblokus/netsurf/pdf/TODO branches/adamblokus/netsurf/pdf/pdf_plotters.c Modified: branches/adamblokus/netsurf/pdf/TODO URL: http://source.netsurf-browser.org/branches/adamblokus/netsurf/pdf/TODO?re... ============================================================================== --- branches/adamblokus/netsurf/pdf/TODO (original) +++ branches/adamblokus/netsurf/pdf/TODO Fri Jun 6 08:36:34 2008 @@ -1,10 +1,13 @@ +- bitmap_tile at page-border - finish all graphic primitives - allow adding raw bitmaps +- make image-aware (embed the image in its native/original type if possible) + - adjust content width to page width - add text-scaling (if not yet using the original font - make the default one have the same width) -- make image-aware (embed the image in its native/original type if possible) - add a save file.. dialogue - divide output into multiple pages (not just the first one) - rearrange file structure - add utf support to Haru ( doable? ) +- wait for browser to end fetching? Modified: branches/adamblokus/netsurf/pdf/pdf_plotters.c URL: http://source.netsurf-browser.org/branches/adamblokus/netsurf/pdf/pdf_plo... ============================================================================== --- branches/adamblokus/netsurf/pdf/pdf_plotters.c (original) +++ branches/adamblokus/netsurf/pdf/pdf_plotters.c Fri Jun 6 08:36:34 2008 @@ -59,6 +59,8 @@ static void pdf_set_dashed(); static void pdf_set_dotted(); +static HPDF_Image pdf_extract_image(struct bitmap *bitmap, struct content *content); + bool pdf_begin(const char *); void pdf_next_page(); void pdf_end(const char *); @@ -72,8 +74,11 @@ static HPDF_Doc pdf_doc; static HPDF_Page pdf_page; static HPDF_Font pdf_font; + /*PDF Page size*/ static HPDF_REAL page_height, page_width; + +/*Remeber if pdf_plot_clip was invoked for current page*/ static bool page_clipped; extern struct plotter_table plot; @@ -105,14 +110,14 @@ #ifdef PDF_DEBUG LOG((".")); #endif - HPDF_Page_SetLineWidth(pdf_page,line_width); + HPDF_Page_SetLineWidth(pdf_page, line_width); if(dotted) pdf_set_dotted(); else if(dashed) pdf_set_dashed(); - HPDF_Page_SetRGBStroke(pdf_page,R(c),G(c),B(c)); + HPDF_Page_SetRGBStroke(pdf_page, R(c), G(c), B(c)); HPDF_Page_Rectangle(pdf_page, x0, page_height - y0 + height, width, height); HPDF_Page_Stroke(pdf_page); @@ -122,20 +127,20 @@ return true; } -bool pdf_plot_line(int x0, int y0, int x1, int y1, int width, +bool pdf_plot_line(int x0, int y0, int x1, int y1, int width, colour c, bool dotted, bool dashed){ #ifdef PDF_DEBUG LOG((".")); #endif - HPDF_Page_SetLineWidth(pdf_page,width); + HPDF_Page_SetLineWidth(pdf_page, width); if(dotted) pdf_set_dotted(); else if(dashed) pdf_set_dashed(); - HPDF_Page_SetRGBStroke(pdf_page,R(c),G(c),B(c)); - HPDF_Page_SetLineWidth(pdf_page,width); + HPDF_Page_SetRGBStroke(pdf_page, R(c), G(c), B(c)); + HPDF_Page_SetLineWidth(pdf_page, width); HPDF_Page_MoveTo(pdf_page, x0, page_height - y0); HPDF_Page_LineTo(pdf_page, x1, page_height - y1); HPDF_Page_Stroke(pdf_page); @@ -148,29 +153,29 @@ bool pdf_plot_polygon(int *p, unsigned int n, colour fill){ int i; - int pmaxx=p[0],pmaxy=p[1]; - int pminx=p[0],pminy=p[1]; + int pmaxx = p[0], pmaxy = p[1]; + int pminx = p[0], pminy = p[1]; #ifdef PDF_DEBUG LOG((".")); #endif - if(n==0) + if(n == 0) return true; - HPDF_Page_SetRGBFill(pdf_page,R(fill),G(fill),B(fill)); + HPDF_Page_SetRGBFill(pdf_page, R(fill), G(fill), B(fill)); HPDF_Page_MoveTo(pdf_page, p[0], page_height - p[1]); - for(i=1;i<n;i++){ + for(i = 1 ; i<n ; i++){ HPDF_Page_LineTo(pdf_page, p[i*2], page_height - p[i*2+1]); #ifdef PDF_DEBUG - pmaxx=max(pmaxx,p[i*2]); - pmaxy=max(pmaxy,p[i*2+1]); - pminx=min(pminx,p[i*2]); - pminy=min(pminy,p[i*2+1]); -#endif - } - -#ifdef PDF_DEBUG - LOG(("%d %d %d %d %f",pminx,pminy, pmaxx, pmaxy, page_height-pminy)); + pmaxx = max(pmaxx, p[i*2]); + pmaxy = max(pmaxy, p[i*2+1]); + pminx = min(pminx, p[i*2]); + pminy = min(pminy, p[i*2+1]); +#endif + } + +#ifdef PDF_DEBUG + LOG(("%d %d %d %d %f", pminx, pminy, pmaxx, pmaxy, page_height-pminy)); #endif HPDF_Page_LineTo(pdf_page, p[0], page_height - p[1]); @@ -182,50 +187,50 @@ bool pdf_plot_fill(int x0, int y0, int x1, int y1, colour c){ #ifdef PDF_DEBUG - LOG(("%d %d %d %d %f %X",x0,y0,x1,y1,page_height-y0,c)); + LOG(("%d %d %d %d %f %X", x0, y0, x1, y1, page_height-y0, c)); #endif /*Normalize boundaries of the area - to prevent overflows*/ - x0=min(max(x0,0),page_width); - y0=min(max(y0,0),page_height); - x1=min(max(x1,0),page_width); - y1=min(max(y1,0),page_height); - - HPDF_Page_SetRGBFill(pdf_page,R(c),G(c),B(c)); + x0 = min(max(x0, 0), page_width); + y0 = min(max(y0, 0), page_height); + x1 = min(max(x1, 0), page_width); + y1 = min(max(y1, 0), page_height); + + HPDF_Page_SetRGBFill(pdf_page, R(c), G(c), B(c)); HPDF_Page_Rectangle(pdf_page, x0, page_height - y1, x1-x0, y1-y0); HPDF_Page_Fill(pdf_page); return true; } -bool pdf_plot_clip(int clip_x0, int clip_y0, +bool pdf_plot_clip(int clip_x0, int clip_y0, int clip_x1, int clip_y1){ #ifdef PDF_DEBUG - LOG(("%d %d %d %d",clip_x0, clip_y0, clip_x1, clip_y1)); + LOG(("%d %d %d %d", clip_x0, clip_y0, clip_x1, clip_y1)); #endif if(page_clipped) HPDF_Page_GRestore(pdf_page); /*Normalize cllipping area - to prevent overflows*/ - clip_x0=min(max(clip_x0,0),page_width); - clip_y0=min(max(clip_y0,0),page_height); - clip_x1=min(max(clip_x1,0),page_width); - clip_y1=min(max(clip_y1,0),page_height); + clip_x0 = min(max(clip_x0, 0), page_width); + clip_y0 = min(max(clip_y0, 0), page_height); + clip_x1 = min(max(clip_x1, 0), page_width); + clip_y1 = min(max(clip_y1, 0), page_height); HPDF_Page_GSave(pdf_page); - HPDF_Page_Rectangle(pdf_page, clip_x0, page_height-clip_y1, - clip_x1-clip_x0, clip_y1-clip_y0); + HPDF_Page_Rectangle(pdf_page, clip_x0, page_height-clip_y1, + clip_x1-clip_x0, clip_y1-clip_y0); HPDF_Page_Clip(pdf_page); HPDF_Page_EndPath(pdf_page); - page_clipped=true; - - return true; -} - -bool pdf_plot_text(int x, int y, const struct css_style *style, + page_clipped = true; + + return true; +} + +bool pdf_plot_text(int x, int y, const struct css_style *style, const char *text, size_t length, colour bg, colour c){ #ifdef PDF_DEBUG LOG((".")); @@ -233,17 +238,19 @@ char *word; HPDF_REAL size; - word=(char*)malloc(sizeof(char)*(length+1)); - - strncpy(word,text,length); - word[length]='\0'; - - if (style->font_size.value.length.unit == CSS_UNIT_PX) + word = (char*)malloc(sizeof(char)*(length+1)); + if(word == NULL) + return false; + + strncpy(word, text, length); + word[length] = '\0'; + + if (style->font_size.value.length.unit == CSS_UNIT_PX) size = style->font_size.value.length.value; else size = css_len2pt(&style->font_size.value.length, style); - HPDF_Page_SetRGBFill(pdf_page,R(c),G(c),B(c)); + HPDF_Page_SetRGBFill(pdf_page, R(c), G(c), B(c)); HPDF_Page_BeginText(pdf_page); HPDF_Page_SetFontAndSize (pdf_page, pdf_font, size*1.5); @@ -260,11 +267,11 @@ LOG((".")); #endif if(filled) - HPDF_Page_SetRGBFill(pdf_page,R(c),G(c),B(c)); + HPDF_Page_SetRGBFill(pdf_page, R(c), G(c), B(c)); else - HPDF_Page_SetRGBStroke(pdf_page,R(c),G(c),B(c)); - - HPDF_Page_Circle(pdf_page,x,page_height-y,radius); + HPDF_Page_SetRGBStroke(pdf_page, R(c), G(c), B(c)); + + HPDF_Page_Circle(pdf_page, x, page_height-y, radius); if(filled) HPDF_Page_Fill(pdf_page); @@ -274,21 +281,21 @@ return true; } -bool pdf_plot_arc(int x, int y, int radius, int angle1, int angle2, +bool pdf_plot_arc(int x, int y, int radius, int angle1, int angle2, colour c){ #ifdef PDF_DEBUG - LOG(("%d %d %d %d %d %X",x,y,radius,angle1,angle2,c)); + LOG(("%d %d %d %d %d %X", x, y, radius, angle1, angle2, c)); #endif /*Normalize angles*/ - angle1%=360; - angle2%=360; - if(angle1>angle2) - angle1-=360; - - HPDF_Page_SetRGBStroke(pdf_page,R(c),G(c),B(c)); - - HPDF_Page_Arc(pdf_page,x,page_height-y,radius,angle1,angle2); + angle1 %= 360; + angle2 %= 360; + if(angle1 > angle2) + angle1 -= 360; + + HPDF_Page_SetRGBStroke(pdf_page, R(c), G(c), B(c)); + + HPDF_Page_Arc(pdf_page, x, page_height-y, radius, angle1, angle2); HPDF_Page_Stroke(pdf_page); return true; @@ -296,31 +303,90 @@ bool pdf_plot_bitmap(int x, int y, int width, int height, struct bitmap *bitmap, colour bg, struct content *content){ - - HPDF_Image image=NULL,smask; - char *img_buffer,*rgb_buffer,*alpha_buffer; - int img_width,img_height,img_rowstride; - int i,j; - + + HPDF_Image image; + #ifdef PDF_DEBUG LOG(("%d %d %d %d %X %X %X", x, y, width, height, bitmap, bg, content)); #endif + image = pdf_extract_image(bitmap, content); + + if(image){ + HPDF_Page_DrawImage(pdf_page, image, + x, page_height-y-height, + width, height); + return true; + } + else + return false; +} + +bool pdf_plot_bitmap_tile(int x, int y, int width, int height, + struct bitmap *bitmap, colour bg, + bool repeat_x, bool repeat_y, struct content *content){ + + HPDF_Image image; + +#ifdef PDF_DEBUG + LOG(("%d %d %d %d %X %X %X", x, y, width, height, + bitmap, bg, content)); +#endif + + image = pdf_extract_image(bitmap, content); + + if(image){ + //The position of the next tile + HPDF_REAL current_x, current_y ; + HPDF_REAL max_width, max_height; + + max_width = (repeat_x ? page_width : width); + max_height = (repeat_y ? page_height: height); + + current_y=0; + while(current_y < max_height){ + current_x=0; + while(current_x < max_width){ + HPDF_Page_DrawImage(pdf_page, image, + current_x, + page_height-current_y-height, + width, height); + current_x += width; + } + current_y += height; + } + + return true; + } + else + return false; + + return true; +} + +HPDF_Image pdf_extract_image(struct bitmap *bitmap, struct content *content){ + HPDF_Image image = NULL,smask; + char *img_buffer, *rgb_buffer, *alpha_buffer; + int img_width, img_height, img_rowstride; + int i, j; + if(content){ /*Not sure if I don't have to check if downloading has been - finished. - Other way - lock pdf plotting while fetching a website + finished. + Other way - lock pdf plotting while fetching a website */ switch(content->type){ /*Handle "embeddable" types of images*/ case CONTENT_JPEG: - image=HPDF_LoadJpegImageFromMem(pdf_doc,content->source_data, + image = HPDF_LoadJpegImageFromMem(pdf_doc, + content->source_data, content->total_size); break; case CONTENT_PNG: - image=HPDF_LoadPngImageFromMem(pdf_doc,content->source_data, + image = HPDF_LoadPngImageFromMem(pdf_doc, + content->source_data, content->total_size); break; } @@ -334,49 +400,52 @@ img_height = bitmap_get_height(bitmap); img_rowstride = bitmap_get_rowstride(bitmap); - rgb_buffer = (char*)malloc(3*img_width*img_height); - alpha_buffer = (char*)malloc(img_width*img_height); - if(!(rgb_buffer&&alpha_buffer)){ - LOG(("Not enough memory?")); - return false; + rgb_buffer = (char*)malloc(3 * img_width * img_height); + if(rgb_buffer == NULL){ + LOG(("Not enough memory to create RGB buffer")); + return NULL; } + + alpha_buffer = (char*)malloc(img_width * img_height); + if(alpha_buffer == NULL){ + LOG(("Not enough memory to create alpha buffer")); + free(rgb_buffer); + return NULL; + } + - for(i=0;i<img_height;i++) - for(j=0;j<img_width;j++){ - rgb_buffer[(i*img_width+j)*3] = img_buffer[i*img_rowstride+j*4]; - rgb_buffer[(i*img_width+j)*3+1] = img_buffer[i*img_rowstride+j*4+1]; - rgb_buffer[(i*img_width+j)*3+2] = img_buffer[i*img_rowstride+j*4+2]; - alpha_buffer[i*img_width+j] = img_buffer[i*img_rowstride+j*4+3]; + for (i = 0; i<img_height; i++) + for(j = 0 ; j<img_width ; j++){ + rgb_buffer[((i * img_width) + j) * 3] = + img_buffer[(i * img_rowstride) + (j * 4)]; + + rgb_buffer[(((i * img_width) + j) * 3) + 1] = + img_buffer[(i * img_rowstride) + (j * 4) + 1]; + + rgb_buffer[(((i * img_width) + j) * 3) + 2] = + img_buffer[(i * img_rowstride) + (j * 4) + 2]; + + alpha_buffer[(i * img_width)+j] = + img_buffer[(i * img_rowstride) + (j * 4) + 3]; } - smask=HPDF_LoadRawImageFromMem(pdf_doc,alpha_buffer, - img_width,img_height, - HPDF_CS_DEVICE_GRAY,8); - - image=HPDF_LoadRawImageFromMem(pdf_doc,rgb_buffer, - img_width,img_height, - HPDF_CS_DEVICE_RGB,8); - - HPDF_Image_AddSMask(pdf_doc,image,smask); - - free(rgb_buffer); - free(alpha_buffer); - } - - if(image) - HPDF_Page_DrawImage(pdf_page,image, - x, page_height-y-height, - width, height); - - return true; -} - -bool pdf_plot_bitmap_tile(int x, int y, int width, int height, - struct bitmap *bitmap, colour bg, - bool repeat_x, bool repeat_y, struct content *content){ - - return true; -} + smask = HPDF_LoadRawImageFromMem(pdf_doc, alpha_buffer, + img_width, img_height, + HPDF_CS_DEVICE_GRAY, 8); + + image = HPDF_LoadRawImageFromMem(pdf_doc, rgb_buffer, + img_width, img_height, + HPDF_CS_DEVICE_RGB, 8); + + HPDF_Image_AddSMask(pdf_doc, image,smask); + + free(rgb_buffer); + free(alpha_buffer); + } + + return image; +} + bool pdf_plot_flush(){ return true; @@ -384,11 +453,12 @@ static inline float transform_x(float *transform,float x,float y){ - return (transform[0] * (x) + transform[2] * -(y) + transform[4]) * 2; + return ((transform[0] * x) + (transform[2] * (-y) ) + transform[4]) * 2; } static inline float transform_y(float *transform,float x,float y){ - return page_height-(transform[1] * (x) + transform[3] * -(y) - transform[5]) * 2; + return page_height - + (((transform[1] * x) + (transform[3] * (-y)) - transform[5]) * 2); } bool pdf_plot_path(float *p, unsigned int n, colour fill, float width, @@ -397,52 +467,52 @@ LOG((".")); #endif unsigned int i; - bool empty_path=true; + bool empty_path = true; - if(n==0) + if(n == 0) return true; - if(c==TRANSPARENT && fill==TRANSPARENT) + if((c == TRANSPARENT) && (fill == TRANSPARENT)) return true; if (p[0] != PLOTTER_PATH_MOVE) { return false; } - HPDF_Page_SetRGBFill(pdf_page,R(fill),G(fill),B(fill)); - HPDF_Page_SetRGBStroke(pdf_page,R(c),G(c),B(c)); - - transform[0]=0.1; - transform[1]=0; - transform[2]=0; - transform[3]=-0.1; - transform[4]=0; - transform[5]=0; - - for(i=0;i<n;){ - if(p[i]==PLOTTER_PATH_MOVE){ - HPDF_Page_MoveTo(pdf_page, - transform_x(transform,p[i+1],p[i+2]), - transform_y(transform,p[i+1],p[i+2])); - i+=3; + HPDF_Page_SetRGBFill(pdf_page, R(fill), G(fill), B(fill)); + HPDF_Page_SetRGBStroke(pdf_page, R(c), G(c), B(c)); + + transform[0] = 0.1; + transform[1] = 0; + transform[2] = 0; + transform[3] = -0.1; + transform[4] = 0; + transform[5] = 0; + + for(i = 0 ; i<n ; ){ + if(p[i] == PLOTTER_PATH_MOVE){ + HPDF_Page_MoveTo(pdf_page, + transform_x(transform, p[i+1], p[i+2]), + transform_y(transform, p[i+1], p[i+2])); + i+= 3; }else if (p[i] == PLOTTER_PATH_CLOSE) { if(!empty_path) HPDF_Page_ClosePath(pdf_page); i++; } else if (p[i] == PLOTTER_PATH_LINE) { - HPDF_Page_LineTo(pdf_page, - transform_x(transform,p[i+1],p[i+2]), - transform_y(transform,p[i+1],p[i+2])); + HPDF_Page_LineTo(pdf_page, + transform_x(transform, p[i+1], p[i+2]), + transform_y(transform, p[i+1], p[i+2])); i+=3; empty_path = false; } else if (p[i] == PLOTTER_PATH_BEZIER) { - HPDF_Page_CurveTo(pdf_page, - transform_x(transform,p[i+1],p[i+2]), - transform_y(transform,p[i+1],p[i+2]), - transform_x(transform,p[i+3],p[i+4]), - transform_y(transform,p[i+3],p[i+4]), - transform_x(transform,p[i+5],p[i+6]), - transform_y(transform,p[i+5],p[i+6])); + HPDF_Page_CurveTo(pdf_page, + transform_x(transform, p[i+1], p[i+2]), + transform_y(transform, p[i+1], p[i+2]), + transform_x(transform, p[i+3], p[i+4]), + transform_y(transform, p[i+3], p[i+4]), + transform_x(transform, p[i+5], p[i+6]), + transform_y(transform, p[i+5], p[i+6])); i += 7; empty_path = false; } else { @@ -469,32 +539,32 @@ } void pdf_set_solid(){ - HPDF_Page_SetDash(pdf_page,NULL,0,0); + HPDF_Page_SetDash(pdf_page, NULL, 0, 0); } void pdf_set_dashed(){ - HPDF_UINT16 dash_ptn[]={3}; - HPDF_Page_SetDash(pdf_page,dash_ptn,1,1); + HPDF_UINT16 dash_ptn[] = {3}; + HPDF_Page_SetDash(pdf_page, dash_ptn, 1, 1); } void pdf_set_dotted(){ - HPDF_UINT16 dash_ptn[]={1}; - HPDF_Page_SetDash(pdf_page,dash_ptn,1,1); + HPDF_UINT16 dash_ptn[] = {1}; + HPDF_Page_SetDash(pdf_page, dash_ptn, 1, 1); } bool pdf_begin(const char *path){ #ifdef PDF_DEBUG - pdf_doc = HPDF_New(error_handler,NULL); + pdf_doc = HPDF_New(error_handler, NULL); #else - pdf_doc = HPDF_New(NULL,NULL); + pdf_doc = HPDF_New(NULL, NULL); #endif if(!pdf_doc){ LOG(("Error creating pdf_doc")); return false; } - HPDF_SetCompressionMode(pdf_doc,HPDF_COMP_ALL); /*Compression on*/ + HPDF_SetCompressionMode(pdf_doc, HPDF_COMP_ALL); /*Compression on*/ pdf_font = HPDF_GetFont (pdf_doc, "Times-Roman", "StandardEncoding"); #ifdef PDF_DEBUG LOG(("pdf_begin finishes")); @@ -509,7 +579,7 @@ page_width = HPDF_Page_GetWidth(pdf_page); page_clipped = false; #ifdef PDF_DEBUG - LOG(("%f %f",page_width,page_height)); + LOG(("%f %f", page_width, page_height)); #endif } @@ -517,8 +587,8 @@ #ifdef PDF_DEBUG LOG(("pdf_end begins")); - pdf_plot_grid(10,10,0xCCCCCC); - pdf_plot_grid(100,100,0xCCCCFF); + pdf_plot_grid(10, 10, 0xCCCCCC); + pdf_plot_grid(100, 100, 0xCCCCFF); #endif HPDF_SaveToFile(pdf_doc, path); @@ -529,26 +599,26 @@ #endif } -void error_handler (HPDF_STATUS error_no, - HPDF_STATUS detail_no, +void error_handler (HPDF_STATUS error_no, + HPDF_STATUS detail_no, void *user_data) { - printf ("ERROR:\n\terror_no=%x\n\tdetail_no=%d\n", - (HPDF_UINT)error_no, + printf ("ERROR:\n\terror_no=%x\n\tdetail_no=%d\n", + (HPDF_UINT)error_no, (HPDF_UINT)detail_no); exit(1); } -void pdf_plot_grid(int x_dist,int y_dist,unsigned int colour){ +void pdf_plot_grid(int x_dist, int y_dist, unsigned int colour){ int i; - for(int i=x_dist;i<page_width;i+=x_dist) - pdf_plot_line(i,0,i,page_height,1,colour,false,false); - - for(int i=y_dist;i<page_height;i+=x_dist) - pdf_plot_line(0,i,page_width,i,1,colour,false,false); - -} - - + for(int i = x_dist ; i<page_width ; i+=x_dist) + pdf_plot_line(i, 0, i, page_height, 1, colour, false, false); + + for(int i = y_dist ; i<page_height ; i+=x_dist) + pdf_plot_line(0, i, page_width, i, 1, colour, false, false); + +} + +