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-rw-r--r--desktop/save_pdf/font_haru.c96
-rw-r--r--desktop/save_pdf/font_haru.h7
-rw-r--r--desktop/save_pdf/pdf_plotters.c420
-rw-r--r--desktop/save_pdf/pdf_plotters.h2
4 files changed, 335 insertions, 190 deletions
diff --git a/desktop/save_pdf/font_haru.c b/desktop/save_pdf/font_haru.c
index 2e5f90adb..56560883a 100644
--- a/desktop/save_pdf/font_haru.c
+++ b/desktop/save_pdf/font_haru.c
@@ -1,5 +1,6 @@
/*
* Copyright 2008 Adam Blokus <adamblokus@gmail.com>
+ * Copyright 2009 John Tytgat <joty@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
@@ -32,8 +33,11 @@
#include <float.h>
#include <math.h>
#include <string.h>
+
#include "hpdf.h"
#include "css/css.h"
+
+#include "desktop/options.h"
#include "desktop/save_pdf/font_haru.h"
#include "render/font.h"
#include "utils/log.h"
@@ -54,6 +58,7 @@ static bool haru_nsfont_split(const struct css_style *style,
const char *string, size_t length,
int x, size_t *char_offset, int *actual_x);
+static float pdf_text_scale = DEFAULT_EXPORT_SCALE;
const struct font_functions haru_nsfont = {
haru_nsfont_width,
@@ -122,22 +127,21 @@ bool haru_nsfont_width(const struct css_style *style,
HPDF_Page page;
char *string_nt;
HPDF_REAL width_real;
-
+
*width = 0;
-
- if (length == 0) {
+
+ if (length == 0)
return true;
- }
-
+
if (!haru_nsfont_init(&pdf, &page, string, &string_nt, length))
return false;
-
- if (!haru_nsfont_apply_style(style, pdf, page, NULL)) {
+
+ if (!haru_nsfont_apply_style(style, pdf, page, NULL, NULL)) {
free(string_nt);
HPDF_Free(pdf);
return false;
}
-
+
width_real = HPDF_Page_TextWidth(page, string_nt);
*width = width_real;
@@ -146,8 +150,7 @@ bool haru_nsfont_width(const struct css_style *style,
#endif
free(string_nt);
HPDF_Free(pdf);
-
-
+
return true;
}
@@ -179,7 +182,7 @@ bool haru_nsfont_position_in_string(const struct css_style *style,
return false;
if (HPDF_Page_SetWidth(page, x) != HPDF_OK
- || !haru_nsfont_apply_style(style, pdf, page, NULL)) {
+ || !haru_nsfont_apply_style(style, pdf, page, NULL, NULL)) {
free(string_nt);
HPDF_Free(pdf);
return false;
@@ -239,7 +242,7 @@ bool haru_nsfont_split(const struct css_style *style,
return false;
if (HPDF_Page_SetWidth(page, x) != HPDF_OK
- || !haru_nsfont_apply_style(style, pdf, page, NULL)) {
+ || !haru_nsfont_apply_style(style, pdf, page, NULL, NULL)) {
free(string_nt);
HPDF_Free(pdf);
return false;
@@ -270,12 +273,18 @@ bool haru_nsfont_split(const struct css_style *style,
* CSS_FONT_SIZE_LENGTH
* \param doc document owning the page
* \param page the page to apply the style to
- * \param font if this is not NULL it is updated to the font from the
- * style and nothing with the page is done
+ * \param font if this is non NULL it is updated to the font based
+ * on given CSS style style
+ * \param font_size if this is non NULL it is updated to the font size
+ * based on given CSS style
* \return true on success, false on error and error reported
+ *
+ * When both font and font_size are NULL, the HPDF_Page is updated for given
+ * CSS style, otherwise it is left to the called to do this.
*/
bool haru_nsfont_apply_style(const struct css_style *style,
- HPDF_Doc doc, HPDF_Page page, HPDF_Font *font)
+ HPDF_Doc doc, HPDF_Page page,
+ HPDF_Font *font, HPDF_REAL *font_size)
{
HPDF_Font pdf_font;
HPDF_REAL size;
@@ -288,7 +297,6 @@ bool haru_nsfont_apply_style(const struct css_style *style,
bold = false;
styled = false;
-
/*TODO: style handling, we are mapping the
styles on the basic 14 fonts only
*/
@@ -311,7 +319,7 @@ bool haru_nsfont_apply_style(const struct css_style *style,
break;
}
- if (style->font_weight == CSS_FONT_WEIGHT_BOLD){
+ if (style->font_weight == CSS_FONT_WEIGHT_BOLD) {
strcat(font_name, "-Bold");
bold = true;
}
@@ -339,34 +347,42 @@ bool haru_nsfont_apply_style(const struct css_style *style,
LOG(("Setting font: %s", font_name));
#endif
- /*the functions was invoked only to get the proper font*/
- if (font != NULL) {
- pdf_font = HPDF_GetFont(doc, font_name, "StandardEncoding");
- if (pdf_font == NULL)
- return false;
+ 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);
+
+ if (font != NULL)
+ size *= pdf_text_scale;
+
+ if (size <= 0)
+ return true;
+
+ if (size > HPDF_MAX_FONTSIZE)
+ size = HPDF_MAX_FONTSIZE;
+
+ if (font_size)
+ *font_size = size;
+
+ pdf_font = HPDF_GetFont(doc, font_name, "StandardEncoding");
+ if (pdf_font == NULL)
+ return false;
+ if (font != NULL)
*font = pdf_font;
- }
- /*the function was invoked to set the page parameters*/
- else {
- 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);
-
- if (size <= 0)
- return false;
-
- if (size > HPDF_MAX_FONTSIZE)
- size = HPDF_MAX_FONTSIZE;
-
- pdf_font = HPDF_GetFont(doc, font_name, "StandardEncoding");
- if (pdf_font == NULL)
- return false;
+
+ if (font == NULL || font_size == NULL)
HPDF_Page_SetFontAndSize(page, pdf_font, size);
- }
return true;
}
+/**
+ * Sync the text scale with the scale for the whole content
+ */
+void haru_nsfont_set_scale(float s)
+{
+ pdf_text_scale = s;
+}
+
#endif /* WITH_PDF_EXPORT */
diff --git a/desktop/save_pdf/font_haru.h b/desktop/save_pdf/font_haru.h
index a0d0c5ef7..0c5e3304b 100644
--- a/desktop/save_pdf/font_haru.h
+++ b/desktop/save_pdf/font_haru.h
@@ -1,5 +1,6 @@
/*
* Copyright 2008 Adam Blokus <adamblokus@gmail.com>
+ * Copyright 2009 John Tytgat <joty@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
@@ -28,8 +29,10 @@
bool haru_nsfont_apply_style(const struct css_style *style,
HPDF_Doc doc, HPDF_Page page,
- HPDF_Font *font);
-
+ HPDF_Font *font, HPDF_REAL *font_size);
+
+void haru_nsfont_set_scale(float s);
+
extern const struct font_functions haru_nsfont;
#endif
diff --git a/desktop/save_pdf/pdf_plotters.c b/desktop/save_pdf/pdf_plotters.c
index 599799555..bdc83a01e 100644
--- a/desktop/save_pdf/pdf_plotters.c
+++ b/desktop/save_pdf/pdf_plotters.c
@@ -40,11 +40,8 @@
#include "font_haru.h"
-#define R(x) (( (x) & 0x0000ff )/256.0)
-#define G(x) ((( (x) & 0x00ff00)>>8 )/256.0)
-#define B(x) ((( (x) & 0xff0000)>>16)/256.0)
-
-/*#define PDF_DEBUG*/
+/* #define PDF_DEBUG */
+/* #define PDF_DEBUG_DUMPGRID */
static bool pdf_plot_clg(colour c);
static bool pdf_plot_rectangle(int x0, int y0, int width, int height,
@@ -68,35 +65,62 @@ static bool pdf_plot_bitmap_tile(int x, int y, int width, int height,
static bool pdf_plot_path(const float *p, unsigned int n, colour fill, float width,
colour c, const float transform[6]);
-static void pdf_set_solid(void);
-static void pdf_set_dashed(void);
-static void pdf_set_dotted(void);
-
static HPDF_Image pdf_extract_image(struct bitmap *bitmap, struct content *content);
-static void apply_clip_and_mode(bool selectTextMode);
-
static void error_handler(HPDF_STATUS error_no, HPDF_STATUS detail_no,
void *user_data);
-#ifdef PDF_DEBUG
+#ifdef PDF_DEBUG_DUMPGRID
static void pdf_plot_grid(int x_dist,int y_dist,unsigned int colour);
#endif
-/*PDF Plotter - current doc,page and font*/
-static HPDF_Doc pdf_doc;
-static HPDF_Page pdf_page;
-static HPDF_Font pdf_font;
+typedef enum {
+ DashPattern_eNone,
+ DashPattern_eDash,
+ DashPattern_eDotted
+} DashPattern_e;
+
+/* Wrapper routines to minimize gstate updates in the produced PDF file. */
+static void pdfw_gs_init(void);
+static void pdfw_gs_save(HPDF_Page page);
+static void pdfw_gs_restore(HPDF_Page page);
+static void pdfw_gs_fillcolour(HPDF_Page page, colour col);
+static void pdfw_gs_strokecolour(HPDF_Page page, colour col);
+static void pdfw_gs_linewidth(HPDF_Page page, float lineWidth);
+static void pdfw_gs_font(HPDF_Page page, HPDF_Font font, HPDF_REAL font_size);
+static void pdfw_gs_dash(HPDF_Page page, DashPattern_e dash);
+
+/**
+ * Our PDF gstate mirror which we use to minimize gstate updates
+ * in the PDF file.
+ */
+typedef struct {
+ colour fillColour; /**< Current fill colour. */
+ colour strokeColour; /**< Current stroke colour. */
+ float lineWidth; /**< Current line width. */
+ HPDF_Font font; /**< Current font. */
+ HPDF_REAL font_size; /**< Current font size. */
+ DashPattern_e dash; /**< Current dash state. */
+} PDFW_GState;
+
+static void apply_clip_and_mode(bool selectTextMode, colour fillCol,
+ colour strokeCol, float lineWidth, DashPattern_e dash);
+
+#define PDFW_MAX_GSTATES 4
+static PDFW_GState pdfw_gs[PDFW_MAX_GSTATES];
+static unsigned int pdfw_gs_level;
+
+static HPDF_Doc pdf_doc; /**< Current PDF document. */
+static HPDF_Page pdf_page; /**< Current page. */
/*PDF Page size*/
static HPDF_REAL page_height, page_width;
-/*Remeber if pdf_plot_clip was invoked for current page*/
-static bool page_clipped;
+static bool in_text_mode; /**< true if we're currently in text mode or not. */
+static bool clip_update_needed; /**< true if pdf_plot_clip was invoked for
+ current page and not yet synced with PDF output. */
static int last_clip_x0, last_clip_y0, last_clip_x1, last_clip_y1;
-static bool in_text_mode;
-
static const struct print_settings *settings;
static const struct plotter_table pdf_plotters = {
@@ -125,7 +149,6 @@ const struct printer pdf_printer = {
pdf_end
};
-static float pdf_scale = DEFAULT_EXPORT_SCALE;
static char *owner_pass;
static char *user_pass;
@@ -140,22 +163,14 @@ bool pdf_plot_rectangle(int x0, int y0, int width, int height,
#ifdef PDF_DEBUG
LOG(("."));
#endif
- apply_clip_and_mode(false);
-
- HPDF_Page_SetLineWidth(pdf_page, line_width);
- if (dotted)
- pdf_set_dotted();
- else if (dashed)
- pdf_set_dashed();
+ apply_clip_and_mode(false, TRANSPARENT, c, line_width,
+ (dotted) ? DashPattern_eDotted :
+ ((dashed) ? DashPattern_eDash : DashPattern_eNone));
- HPDF_Page_SetRGBStroke(pdf_page, R(c), G(c), B(c));
HPDF_Page_Rectangle(pdf_page, x0, page_height - y0, width, -height);
HPDF_Page_Stroke(pdf_page);
- if (dotted || dashed)
- pdf_set_solid();
-
return true;
}
@@ -166,24 +181,14 @@ bool pdf_plot_line(int x0, int y0, int x1, int y1, int width,
LOG(("."));
#endif
- apply_clip_and_mode(false);
-
- HPDF_Page_SetLineWidth(pdf_page, width);
-
- if (dotted)
- pdf_set_dotted();
- else if (dashed)
- pdf_set_dashed();
+ apply_clip_and_mode(false, TRANSPARENT, c, width,
+ (dotted) ? DashPattern_eDotted :
+ ((dashed) ? DashPattern_eDash : DashPattern_eNone));
- 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);
- if (dotted || dashed)
- pdf_set_solid();
-
return true;
}
@@ -198,11 +203,9 @@ bool pdf_plot_polygon(const int *p, unsigned int n, colour fill)
if (n == 0)
return true;
- apply_clip_and_mode(false);
+ apply_clip_and_mode(false, fill, TRANSPARENT, 0., DashPattern_eNone);
- 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++) {
HPDF_Page_LineTo(pdf_page, p[i*2], page_height - p[i*2+1]);
#ifdef PDF_DEBUG
@@ -217,7 +220,6 @@ bool pdf_plot_polygon(const int *p, unsigned int n, colour fill)
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]);
HPDF_Page_Fill(pdf_page);
return true;
@@ -229,6 +231,8 @@ bool pdf_plot_fill(int x0, int y0, int x1, int y1, colour c)
LOG(("%d %d %d %d %f %X", x0, y0, x1, y1, page_height - y0, c));
#endif
+ apply_clip_and_mode(false, c, TRANSPARENT, 0., DashPattern_eNone);
+
/*Normalize boundaries of the area - to prevent overflows.
It is needed only in a few functions, where integers are subtracted.
When the whole browser window is meant min and max int values are used
@@ -239,10 +243,7 @@ bool pdf_plot_fill(int x0, int y0, int x1, int y1, colour c)
x1 = min(max(x1, 0), page_width);
y1 = min(max(y1, 0), page_height);
- apply_clip_and_mode(false);
-
- 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_Rectangle(pdf_page, x0, page_height, x1 - x0, y0 - y1);
HPDF_Page_Fill(pdf_page);
return true;
@@ -263,7 +264,7 @@ bool pdf_plot_clip(int clip_x0, int clip_y0, int clip_x1, int clip_y1)
last_clip_x1 = min(max(clip_x1, 0), page_width);
last_clip_y1 = min(max(clip_y1, 0), page_height);
- page_clipped = true;
+ clip_update_needed = true;
return true;
}
@@ -275,42 +276,25 @@ bool pdf_plot_text(int x, int y, const struct css_style *style,
LOG((". %d %d %.*s", x, y, (int)length, text));
#endif
char *word;
+ HPDF_Font pdf_font;
HPDF_REAL size;
- float text_bottom_position, descent;
if (length == 0)
return true;
- apply_clip_and_mode(true);
-
- 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);
-
- size *= pdf_scale;
-
- if (size <= 0)
- return true;
-
- if (size > HPDF_MAX_FONTSIZE)
- size = HPDF_MAX_FONTSIZE;
-
- haru_nsfont_apply_style(style, pdf_doc, pdf_page, &pdf_font);
+ apply_clip_and_mode(true, c, TRANSPARENT, 0., DashPattern_eNone);
- descent = size * (HPDF_Font_GetDescent(pdf_font) / 1000.0);
- text_bottom_position = page_height - y + descent;
+ haru_nsfont_apply_style(style, pdf_doc, pdf_page, &pdf_font, &size);
+ pdfw_gs_font(pdf_page, pdf_font, size);
- word = (char*) malloc( sizeof(char) * (length+1) );
+ /* FIXME: UTF-8 to current font encoding needs to done. Or the font
+ * encoding needs to be UTF-8 or other Unicode encoding. */
+ word = (char *)malloc( sizeof(char) * (length+1) );
if (word == NULL)
return false;
-
memcpy(word, text, length);
word[length] = '\0';
- HPDF_Page_SetRGBFill(pdf_page, R(c), G(c), B(c));
-
- HPDF_Page_SetFontAndSize (pdf_page, pdf_font, size);
HPDF_Page_TextOut (pdf_page, x, page_height - y, word);
free(word);
@@ -323,12 +307,11 @@ bool pdf_plot_disc(int x, int y, int radius, colour c, bool filled)
#ifdef PDF_DEBUG
LOG(("."));
#endif
- apply_clip_and_mode(false);
- if (filled)
- HPDF_Page_SetRGBFill(pdf_page, R(c), G(c), B(c));
- else
- HPDF_Page_SetRGBStroke(pdf_page, R(c), G(c), B(c));
+ /* FIXME: line width 1 is ok ? */
+ apply_clip_and_mode(false,
+ filled ? c : TRANSPARENT, filled ? TRANSPARENT : c,
+ 1., DashPattern_eNone);
HPDF_Page_Circle(pdf_page, x, page_height - y, radius);
@@ -346,16 +329,15 @@ bool pdf_plot_arc(int x, int y, int radius, int angle1, int angle2, colour c)
LOG(("%d %d %d %d %d %X", x, y, radius, angle1, angle2, c));
#endif
- /*Normalize angles*/
+ /* FIXME: line width 1 is ok ? */
+ apply_clip_and_mode(false, TRANSPARENT, c, 1., DashPattern_eNone);
+
+ /* Normalize angles */
angle1 %= 360;
angle2 %= 360;
if (angle1 > angle2)
angle1 -= 360;
- apply_clip_and_mode(false);
-
- 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);
@@ -374,7 +356,7 @@ bool pdf_plot_bitmap(int x, int y, int width, int height,
if (width == 0 || height == 0)
return true;
- apply_clip_and_mode(false);
+ apply_clip_and_mode(false, TRANSPARENT, TRANSPARENT, 0., DashPattern_eNone);
image = pdf_extract_image(bitmap, content);
@@ -404,7 +386,7 @@ bool pdf_plot_bitmap_tile(int x, int y, int width, int height,
if (width == 0 || height == 0)
return true;
- apply_clip_and_mode(false);
+ apply_clip_and_mode(false, TRANSPARENT, TRANSPARENT, 0., DashPattern_eNone);
image = pdf_extract_image(bitmap, content);
if (!image)
@@ -508,18 +490,55 @@ HPDF_Image pdf_extract_image(struct bitmap *bitmap, struct content *content)
}
/**
- * Change the mode and clip only if it's necessary
+ * Enter/leave text mode and update PDF gstate for its clip, fill & stroke
+ * colour, line width and dash pattern parameters.
+ * \param selectTextMode true if text mode needs to be entered if required;
+ * false otherwise.
+ * \param fillCol Desired fill colour, use TRANSPARENT if no update is
+ * required.
+ * \param strokeCol Desired stroke colour, use TRANSPARENT if no update is
+ * required.
+ * \param lineWidth Desired line width. Only taken into account when strokeCol
+ * is different from TRANSPARENT.
+ * \param dash Desired dash pattern. Only taken into account when strokeCol
+ * is different from TRANSPARENT.
*/
-static void apply_clip_and_mode(bool selectTextMode)
+static void apply_clip_and_mode(bool selectTextMode, colour fillCol,
+ colour strokeCol, float lineWidth, DashPattern_e dash)
{
- if (in_text_mode && (!selectTextMode || page_clipped)) {
+ /* Leave text mode when
+ * 1) we're not setting text anymore
+ * 2) or we need to update the current clippath
+ * 3) or we need to update any fill/stroke colour, linewidth or dash.
+ * Note: the test on stroke parameters (stroke colour, line width and
+ * dash) is commented out as if these need updating we want to be
+ * outside the text mode anyway (i.e. selectTextMode is false).
+ */
+ if (in_text_mode && (!selectTextMode || clip_update_needed
+ || (fillCol != TRANSPARENT
+ && fillCol != pdfw_gs[pdfw_gs_level].fillColour)
+ /* || (strokeCol != TRANSPARENT
+ && (strokeCol != pdfw_gs[pdfw_gs_level].strokeColour
+ || lineWidth != pdfw_gs[pdfw_gs_level].lineWidth
+ || dash != pdfw_gs[pdfw_gs_level].dash)) */)) {
HPDF_Page_EndText(pdf_page);
in_text_mode = false;
}
- if (page_clipped) {
- HPDF_Page_GRestore(pdf_page);
- HPDF_Page_GSave(pdf_page);
+ if (clip_update_needed)
+ pdfw_gs_restore(pdf_page);
+
+ /* Update fill/stroke colour, linewidth and dash when needed. */
+ if (fillCol != TRANSPARENT)
+ pdfw_gs_fillcolour(pdf_page, fillCol);
+ if (strokeCol != TRANSPARENT) {
+ pdfw_gs_strokecolour(pdf_page, strokeCol);
+ pdfw_gs_linewidth(pdf_page, lineWidth);
+ pdfw_gs_dash(pdf_page, dash);
+ }
+
+ if (clip_update_needed) {
+ pdfw_gs_save(pdf_page);
HPDF_Page_Rectangle(pdf_page, last_clip_x0,
page_height - last_clip_y1,
@@ -528,14 +547,12 @@ static void apply_clip_and_mode(bool selectTextMode)
HPDF_Page_Clip(pdf_page);
HPDF_Page_EndPath(pdf_page);
- page_clipped = false;
+ clip_update_needed = false;
}
- if (selectTextMode) {
- if (!in_text_mode) {
- HPDF_Page_BeginText(pdf_page);
- in_text_mode = true;
- }
+ if (selectTextMode && !in_text_mode) {
+ HPDF_Page_BeginText(pdf_page);
+ in_text_mode = true;
}
}
@@ -553,11 +570,12 @@ static inline float transform_y(const float transform[6], float x, float y)
bool pdf_plot_path(const float *p, unsigned int n, colour fill, float width,
colour c, const float transform[6])
{
+ unsigned int i;
+ bool empty_path;
+
#ifdef PDF_DEBUG
LOG(("."));
#endif
- unsigned int i;
- bool empty_path;
if (n == 0)
return true;
@@ -568,14 +586,7 @@ bool pdf_plot_path(const float *p, unsigned int n, colour fill, float width,
if (p[0] != PLOTTER_PATH_MOVE)
return false;
- apply_clip_and_mode(false);
-
- if (fill != TRANSPARENT)
- HPDF_Page_SetRGBFill(pdf_page, R(fill), G(fill), B(fill));
- if (c != TRANSPARENT) {
- HPDF_Page_SetLineWidth(pdf_page, width);
- HPDF_Page_SetRGBStroke(pdf_page, R(c), G(c), B(c));
- }
+ apply_clip_and_mode(false, fill, c, width, DashPattern_eNone);
empty_path = true;
for (i = 0 ; i < n ; ) {
@@ -627,23 +638,6 @@ bool pdf_plot_path(const float *p, unsigned int n, colour fill, float width,
return true;
}
-void pdf_set_solid()
-{
- HPDF_Page_SetDash(pdf_page, NULL, 0, 0);
-}
-
-void pdf_set_dashed()
-{
- const HPDF_UINT16 dash_ptn[] = {3};
- HPDF_Page_SetDash(pdf_page, dash_ptn, 1, 1);
-}
-
-void pdf_set_dotted()
-{
- const HPDF_UINT16 dash_ptn[] = {1};
- HPDF_Page_SetDash(pdf_page, dash_ptn, 1, 1);
-}
-
/**
* Begin pdf plotting - initialize a new document
* \param path Output file path
@@ -652,6 +646,8 @@ void pdf_set_dotted()
*/
bool pdf_begin(struct print_settings *print_settings)
{
+ pdfw_gs_init();
+
if (pdf_doc != NULL)
HPDF_Free(pdf_doc);
pdf_doc = HPDF_New(error_handler, NULL);
@@ -674,7 +670,6 @@ bool pdf_begin(struct print_settings *print_settings)
#endif
HPDF_SetInfoAttr(pdf_doc, HPDF_INFO_CREATOR, user_agent_string());
- pdf_font = NULL;
pdf_page = NULL;
#ifdef PDF_DEBUG
@@ -689,13 +684,14 @@ bool pdf_next_page(void)
#ifdef PDF_DEBUG
LOG(("pdf_next_page begins"));
#endif
+ clip_update_needed = false;
if (pdf_page != NULL) {
- page_clipped = false;
- apply_clip_and_mode(false);
- HPDF_Page_GRestore(pdf_page);
+ apply_clip_and_mode(false, TRANSPARENT, TRANSPARENT, 0.,
+ DashPattern_eNone);
+ pdfw_gs_restore(pdf_page);
}
-#ifdef PDF_DEBUG
+#ifdef PDF_DEBUG_DUMPGRID
if (pdf_page != NULL) {
pdf_plot_grid(10, 10, 0xCCCCCC);
pdf_plot_grid(100, 100, 0xCCCCFF);
@@ -708,10 +704,9 @@ bool pdf_next_page(void)
HPDF_Page_SetWidth (pdf_page, settings->page_width);
HPDF_Page_SetHeight(pdf_page, settings->page_height);
- HPDF_Page_Concat(pdf_page,1,0,0,1,settings->margins[MARGINLEFT],0);
+ HPDF_Page_Concat(pdf_page, 1, 0, 0, 1, settings->margins[MARGINLEFT], 0);
- page_clipped = false;
- HPDF_Page_GSave(pdf_page);
+ pdfw_gs_save(pdf_page);
#ifdef PDF_DEBUG
LOG(("%f %f", page_width, page_height));
@@ -726,13 +721,14 @@ void pdf_end(void)
#ifdef PDF_DEBUG
LOG(("pdf_end begins"));
#endif
+ clip_update_needed = false;
if (pdf_page != NULL) {
- page_clipped = false;
- apply_clip_and_mode(false);
- HPDF_Page_GRestore(pdf_page);
+ apply_clip_and_mode(false, TRANSPARENT, TRANSPARENT, 0.,
+ DashPattern_eNone);
+ pdfw_gs_restore(pdf_page);
}
-#ifdef PDF_DEBUG
+#ifdef PDF_DEBUG_DUMPGRID
if (pdf_page != NULL) {
pdf_plot_grid(10, 10, 0xCCCCCC);
pdf_plot_grid(100, 100, 0xCCCCFF);
@@ -797,7 +793,7 @@ static void error_handler(HPDF_STATUS error_no, HPDF_STATUS detail_no,
* This function plots a grid - used for debug purposes to check if all
* elements' final coordinates are correct.
*/
-#ifdef PDF_DEBUG
+#ifdef PDF_DEBUG_DUMPGRID
void pdf_plot_grid(int x_dist, int y_dist, unsigned int colour)
{
for (int i = x_dist ; i < page_width ; i += x_dist)
@@ -805,16 +801,148 @@ void pdf_plot_grid(int x_dist, int y_dist, unsigned int colour)
for (int i = y_dist ; i < page_height ; i += x_dist)
pdf_plot_line(0, i, page_width, i, 1, colour, false, false);
-
}
#endif
/**
- * Sync the text scale with the scale for the whole content
+ * Initialize the gstate wrapper code.
*/
-void pdf_set_scale(float s)
+void pdfw_gs_init()
{
- pdf_scale = s;
+ pdfw_gs_level = 0;
+ pdfw_gs[0].fillColour = 0x00000000; /* Default PDF fill colour is black. */
+ pdfw_gs[0].strokeColour = 0x00000000; /* Default PDF stroke colour is black. */
+ pdfw_gs[0].lineWidth = 1.0; /* Default PDF line width is 1. */
+ pdfw_gs[0].font = NULL;
+ pdfw_gs[0].font_size = 0.;
+ pdfw_gs[0].dash = DashPattern_eNone; /* Default dash state is a solid line. */
+}
+
+/**
+ * Increase gstate level.
+ * \param page PDF page where the update needs to happen.
+ */
+void pdfw_gs_save(HPDF_Page page)
+{
+ if (pdfw_gs_level == PDFW_MAX_GSTATES)
+ abort();
+ pdfw_gs[pdfw_gs_level + 1] = pdfw_gs[pdfw_gs_level];
+ ++pdfw_gs_level;
+ HPDF_Page_GSave(page);
+}
+
+/**
+ * Decrease gstate level and restore the gstate to its value at last save
+ * operation.
+ * \param page PDF page where the update needs to happen.
+ */
+void pdfw_gs_restore(HPDF_Page page)
+{
+ if (pdfw_gs_level == 0)
+ abort();
+ --pdfw_gs_level;
+ HPDF_Page_GRestore(page);
+}
+
+#define RBYTE(x) (((x) & 0x0000FF) >> 0)
+#define GBYTE(x) (((x) & 0x00FF00) >> 8)
+#define BBYTE(x) (((x) & 0xFF0000) >> 16)
+#define R(x) (RBYTE(x) / 255.)
+#define G(x) (GBYTE(x) / 255.)
+#define B(x) (BBYTE(x) / 255.)
+
+/**
+ * Checks if given fill colour is already set in PDF gstate and if not,
+ * update the gstate accordingly.
+ * \param page PDF page where the update needs to happen.
+ * \param col Wanted fill colour.
+ */
+void pdfw_gs_fillcolour(HPDF_Page page, colour col)
+{
+ if (col == pdfw_gs[pdfw_gs_level].fillColour)
+ return;
+ pdfw_gs[pdfw_gs_level].fillColour = col;
+ if (RBYTE(col) == GBYTE(col) && GBYTE(col) == BBYTE(col))
+ HPDF_Page_SetGrayFill(pdf_page, R(col));
+ else
+ HPDF_Page_SetRGBFill(pdf_page, R(col), G(col), B(col));
+}
+
+/**
+ * Checks if given stroke colour is already set in PDF gstate and if not,
+ * update the gstate accordingly.
+ * \param page PDF page where the update needs to happen.
+ * \param col Wanted stroke colour.
+ */
+void pdfw_gs_strokecolour(HPDF_Page page, colour col)
+{
+ if (col == pdfw_gs[pdfw_gs_level].strokeColour)
+ return;
+ pdfw_gs[pdfw_gs_level].strokeColour = col;
+ if (RBYTE(col) == GBYTE(col) && GBYTE(col) == BBYTE(col))
+ HPDF_Page_SetGrayStroke(pdf_page, R(col));
+ else
+ HPDF_Page_SetRGBStroke(pdf_page, R(col), G(col), B(col));
+}
+
+/**
+ * Checks if given line width is already set in PDF gstate and if not, update
+ * the gstate accordingly.
+ * \param page PDF page where the update needs to happen.
+ * \param lineWidth Wanted line width.
+ */
+void pdfw_gs_linewidth(HPDF_Page page, float lineWidth)
+{
+ if (lineWidth == pdfw_gs[pdfw_gs_level].lineWidth)
+ return;
+ pdfw_gs[pdfw_gs_level].lineWidth = lineWidth;
+ HPDF_Page_SetLineWidth(page, lineWidth);
+}
+
+/**
+ * Checks if given font and font size is already set in PDF gstate and if not,
+ * update the gstate accordingly.
+ * \param page PDF page where the update needs to happen.
+ * \param font Wanted PDF font.
+ * \param font_size Wanted PDF font size.
+ */
+void pdfw_gs_font(HPDF_Page page, HPDF_Font font, HPDF_REAL font_size)
+{
+ if (font == pdfw_gs[pdfw_gs_level].font
+ && font_size == pdfw_gs[pdfw_gs_level].font_size)
+ return;
+ pdfw_gs[pdfw_gs_level].font = font;
+ pdfw_gs[pdfw_gs_level].font_size = font_size;
+ HPDF_Page_SetFontAndSize(page, font, font_size);
+}
+
+/**
+ * Checks if given dash pattern is already set in PDF gstate and if not,
+ * update the gstate accordingly.
+ * \param page PDF page where the update needs to happen.
+ * \param dash Wanted dash pattern.
+ */
+void pdfw_gs_dash(HPDF_Page page, DashPattern_e dash)
+{
+ if (dash == pdfw_gs[pdfw_gs_level].dash)
+ return;
+ pdfw_gs[pdfw_gs_level].dash = dash;
+ switch (dash) {
+ case DashPattern_eNone: {
+ HPDF_Page_SetDash(page, NULL, 0, 0);
+ break;
+ }
+ case DashPattern_eDash: {
+ const HPDF_UINT16 dash_ptn[] = {3};
+ HPDF_Page_SetDash(page, dash_ptn, 1, 1);
+ break;
+ }
+ case DashPattern_eDotted: {
+ const HPDF_UINT16 dash_ptn[] = {1};
+ HPDF_Page_SetDash(page, dash_ptn, 1, 1);
+ break;
+ }
+ }
}
#endif /* WITH_PDF_EXPORT */
diff --git a/desktop/save_pdf/pdf_plotters.h b/desktop/save_pdf/pdf_plotters.h
index a64b91768..7ecb54964 100644
--- a/desktop/save_pdf/pdf_plotters.h
+++ b/desktop/save_pdf/pdf_plotters.h
@@ -36,8 +36,6 @@ bool pdf_next_page(void);
/**Close pdf document and save changes to file*/
void pdf_end(void);
-void pdf_set_scale(float s);
-
void save_pdf(const char *path);
#endif /*NETSURF_PDF_PLOTTERS_H*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 18:48:15 +0000