Move class Fl_SVG_File_Surface from libfltk to libfltk_images.
File examples/SVG_File_Surface.cxx is no longer useful because it was a very partial implementation of what is now class Fl_SVG_File_Surface.
This commit is contained in:
ManoloFLTK
parent
26e6c3f930
commit
8d4b0c15f7
@ -56,14 +56,13 @@ class Fl_Widget;
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Class Fl_Surface_Device can also be derived to define new kinds of graphical output
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usable with FLTK drawing functions.
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An example would be to draw to an SVG file. This would require to create a new class,
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say SVG_Surface, derived from class Fl_Surface_Device, and another new class,
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say SVG_Graphics_Driver, derived from class Fl_Graphics_Driver.
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Class SVG_Graphics_Driver should implement all virtual methods of the Fl_Graphics_Driver class
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to support all FLTK drawing functions and have them draw into SVG files. Alternatively,
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class SVG_Graphics_Driver could implement only some virtual methods, and only part of
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the FLTK drawing API would be usable when drawing to SVG files
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(see examples/SVG_File_Surface.cxx for a small, working implementation of this procedure).
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An example would be to draw to a PDF file. This would require to create a new class,
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say PDF_File_Surface, derived from class Fl_Surface_Device, and another new class,
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say PDF_Graphics_Driver, derived from class Fl_Graphics_Driver.
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Class PDF_Graphics_Driver should implement all virtual methods of the Fl_Graphics_Driver class
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to support all FLTK drawing functions and have them draw into PDF files. Alternatively,
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class PDF_Graphics_Driver could implement only some virtual methods, and only part of
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the FLTK drawing API would be usable when drawing to PDF files.
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*/
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class FL_EXPORT Fl_Surface_Device {
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/** The graphics driver in use by this surface. */
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@ -39,8 +39,9 @@
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fclose(svg);
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}
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\endcode
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\note FLTK uses the PNG and JPEG libraries to encode images to the SVG format. If JPEG is
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not available at application build time, PNG is enough (but produces a quite larger output).
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\note FLTK uses the PNG and JPEG libraries to encode images to the SVG format.
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For this reason, class Fl_SVG_File_Surface is placed in the fltk_images library.
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If JPEG is not available at application build time, PNG is enough (but produces a quite larger output).
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If PNG isn't available either, images don't appear in the SVG output.
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*/
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class FL_EXPORT Fl_SVG_File_Surface : public Fl_Widget_Surface {
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@ -24,7 +24,6 @@ ALL = browser-simple$(EXEEXT) \
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progress-simple$(EXEEXT) \
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shapedwindow$(EXEEXT) \
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simple-terminal$(EXEEXT) \
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SVG_File_Surface$(EXEEXT) \
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table-as-container$(EXEEXT) \
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table-simple$(EXEEXT) \
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table-sort$(EXEEXT) \
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@ -1,218 +0,0 @@
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//
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// "$Id$"
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//
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// Subclassing Fl_Surface_Device and Fl_Graphics_Driver in the Fast Light Tool Kit (FLTK).
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//
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// Copyright 2018 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// http://www.fltk.org/COPYING.php
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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// Partial, working implementation of how to draw into an SVG file using the standard
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// FLTK drawing API.
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// File hello.svg is created in the current directory.
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#include <FL/fl_draw.H>
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#include <stdio.h>
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#include <FL/Fl_Device.H>
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#include <FL/Fl_Graphics_Driver.H>
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Box.H>
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class SVG_Graphics_Driver : public Fl_Graphics_Driver {
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FILE *out_;
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int width_;
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const char *linecap_;
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uchar red_, green_, blue_;
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public:
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SVG_Graphics_Driver(FILE*);
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~SVG_Graphics_Driver();
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FILE* file() {return out_;}
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protected:
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const char *family_;
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const char *bold_;
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const char *style_;
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void rect(int x, int y, int w, int h);
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void rectf(int x, int y, int w, int h);
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void line_style(int style, int width, char *dashes=0);
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void line(int x1, int y1, int x2, int y2);
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void font_(int f, int s);
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void font(int f, int s);
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void draw(const char *str, int n, int x, int y);
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void draw(const char*, int, float, float) ;
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void draw(int, const char*, int, int, int) ;
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void color(uchar r, uchar g, uchar b);
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void color(Fl_Color c);
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double width(const char*, int) ;
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int height() ;
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int descent() ;
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};
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class SVG_File_Surface : public Fl_Surface_Device {
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int width_, height_;
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public:
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SVG_File_Surface(int width, int height, FILE*);
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int width() { return width_; }
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int height() { return height_; }
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~SVG_File_Surface();
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};
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SVG_Graphics_Driver::SVG_Graphics_Driver(FILE *f) {
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out_ = f;
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width_ = 1;
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linecap_ = "butt";
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family_ = "";
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bold_ = "";
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style_ = "";
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red_ = green_ = blue_ = 0;
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}
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SVG_Graphics_Driver::~SVG_Graphics_Driver()
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{
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}
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void SVG_Graphics_Driver::rect(int x, int y, int w, int h) {
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fprintf(out_, "<rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" "
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"fill=\"none\" stroke=\"rgb(%u,%u,%u)\" stroke-width=\"%d\"/>\n", x, y, w, h, red_, green_, blue_, width_);
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}
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void SVG_Graphics_Driver::rectf(int x, int y, int w, int h) {
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fprintf(out_, "<rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" "
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"fill=\"rgb(%u,%u,%u)\" />\n", x, y, w, h, red_, green_, blue_);
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}
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void SVG_Graphics_Driver::line(int x1, int y1, int x2, int y2) {
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fprintf(out_,
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"<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" "
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"style=\"stroke:rgb(%u,%u,%u);stroke-width:%d;stroke-linecap:%s\" />\n",
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x1,y1,x2,y2, red_, green_, blue_, width_, linecap_);
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}
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void SVG_Graphics_Driver::font_(int ft, int s) {
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Fl_Graphics_Driver::font(ft, s);
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int famnum = ft/4;
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if (famnum == 0) family_ = "Helvetica";
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else if (famnum == 1) family_ = "Courier";
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else family_ = "Times";
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int modulo = ft % 4;
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int use_bold = modulo == 1 || modulo == 3;
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int use_italic = modulo >= 2;
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bold_ = ( use_bold ? " font-weight=\"bold\"" : "" );
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style_ = ( use_italic ? " font-style=\"italic\"" : "" );
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if (use_italic && famnum != 2) style_ = " font-style=\"oblique\"";
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}
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void SVG_Graphics_Driver::font(int ft, int s) {
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Fl_Display_Device::display_device()->driver()->font(ft, s);
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font_(ft, s);
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}
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void SVG_Graphics_Driver::line_style(int style, int width, char *dashes) {
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if (width == 0) width = 1;
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width_ = width;
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if (style & FL_CAP_SQUARE) linecap_ = "square";
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if (style & FL_CAP_ROUND) linecap_ = "round";
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else linecap_ = "butt";
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}
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void SVG_Graphics_Driver::draw(const char *str, int n, int x, int y) {
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// Caution: Internet Explorer ignores the xml:space="preserve" attribute
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// work-around: replace all spaces by no-break space = U+00A0 = 0xC2-0xA0 (UTF-8) before sending to IE
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fprintf(out_, "<text x=\"%d\" y=\"%d\" font-family=\"%s\"%s%s font-size=\"%d\" "
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"xml:space=\"preserve\" "
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" fill=\"rgb(%u,%u,%u)\" textLength=\"%d\">%.*s</text>\n",x, y, family_, bold_, style_, size(), red_, green_, blue_, (int)width(str, n), n, str);
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}
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void SVG_Graphics_Driver::draw(const char* str, int n, float fx, float fy) {
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return draw(str, n, (int)fx, (int)fy);
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}
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void SVG_Graphics_Driver::draw(int angle, const char* str, int n, int x, int y) {
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fprintf(out_, "<g transform=\"translate(%d,%d) rotate(%d)\">", x, y, -angle);
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draw(str, n, 0, 0);
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fputs("</g>\n", out_);
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}
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void SVG_Graphics_Driver::color(Fl_Color c) {
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Fl_Graphics_Driver::color(c);
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Fl::get_color(c, red_, green_, blue_);
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}
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void SVG_Graphics_Driver::color(uchar r, uchar g, uchar b) {
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red_ = r;
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green_ = g;
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blue_ = b;
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}
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double SVG_Graphics_Driver::width(const char* str, int l) {
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return Fl_Display_Device::display_device()->driver()->width(str, l);
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}
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int SVG_Graphics_Driver::height() {
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return Fl_Display_Device::display_device()->driver()->height();
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}
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int SVG_Graphics_Driver::descent() {
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return Fl_Display_Device::display_device()->driver()->descent();
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}
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SVG_File_Surface::SVG_File_Surface(int w, int h, FILE *f) : Fl_Surface_Device(NULL) {
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fprintf(f,
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"<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n"
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"<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \n"
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"\"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n"
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"<svg width=\"%dpx\" height=\"%dpx\" viewBox=\"0 0 %d %d\"\n"
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"xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\">\n", w, h, w, h);
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width_ = w; height_ = h;
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driver(new SVG_Graphics_Driver(f));
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}
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SVG_File_Surface::~SVG_File_Surface() {
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SVG_Graphics_Driver *driver = (SVG_Graphics_Driver*)this->driver();
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fputs("</svg>\n", driver->file());
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fflush(driver->file());
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delete driver;
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}
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int main(int argc, char **argv) {
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Fl_Window *window = new Fl_Window(340,180);
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Fl_Box *box = new Fl_Box(20,40,300,100,"Hello, World!");
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box->box(FL_UP_BOX);
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box->labelfont(FL_BOLD+FL_ITALIC);
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box->labelsize(36);
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box->labeltype(FL_SHADOW_LABEL);
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window->end();
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window->show(argc, argv);
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FILE *out = fl_fopen("hello.svg", "w");
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if (out) {
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SVG_File_Surface *svg = new SVG_File_Surface(box->w(), box->h(), out);
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Fl_Surface_Device::push_current(svg);
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fl_color(box->color());
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fl_rectf(0, 0, box->w(), box->h());
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fl_font(box->labelfont(), 36);
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fl_color(box->labelcolor());
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fl_draw(box->label(), 5, 50);
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Fl_Surface_Device::pop_current();
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delete svg;
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fclose(out);
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}
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return Fl::run();
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}
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//
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// End of "$Id$".
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//
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@ -161,7 +161,6 @@ set (CPPFILES
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fl_utf8.cxx
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fl_encoding_latin1.cxx
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fl_encoding_mac_roman.cxx
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drivers/SVG/Fl_SVG_File_Surface.cxx
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)
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# find all header files in source directory <FL/...>
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@ -423,6 +422,7 @@ set (IMGCPPFILES
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Fl_PNM_Image.cxx
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Fl_Image_Reader.cxx
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Fl_SVG_Image.cxx
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drivers/SVG/Fl_SVG_File_Surface.cxx
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)
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set (CFILES
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@ -212,7 +212,8 @@ IMGCPPFILES = \
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Fl_PNG_Image.cxx \
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Fl_PNM_Image.cxx \
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Fl_Image_Reader.cxx \
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Fl_SVG_Image.cxx
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Fl_SVG_Image.cxx \
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drivers/SVG/Fl_SVG_File_Surface.cxx
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CFILES = fl_call_main.c flstring.c numericsort.c vsnprintf.c
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@ -305,8 +306,7 @@ GDICFILES = \
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PSCPPFILES = \
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drivers/PostScript/Fl_PostScript.cxx \
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drivers/PostScript/Fl_PostScript_image.cxx \
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drivers/SVG/Fl_SVG_File_Surface.cxx
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drivers/PostScript/Fl_PostScript_image.cxx
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################################################################
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FLTKFLAGS = -DFL_LIBRARY
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@ -254,6 +254,30 @@ drivers/PostScript/Fl_PostScript_image.o: ../FL/Fl_Widget.H
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drivers/PostScript/Fl_PostScript_image.o: ../FL/Fl_Widget_Surface.H
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drivers/PostScript/Fl_PostScript_image.o: ../FL/Fl_Window.H
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drivers/PostScript/Fl_PostScript_image.o: ../FL/platform_types.h
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drivers/SVG/Fl_SVG_File_Surface.o: ../config.h
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/abi-version.h
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Enumerations.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Bitmap.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Cairo.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Device.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/fl_draw.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Export.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Graphics_Driver.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Group.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Image.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Pixmap.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Plugin.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Preferences.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_RGB_Image.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_SVG_File_Surface.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/fl_types.h
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/fl_utf8.h
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Widget.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Widget_Surface.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/Fl_Window.H
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/math.h
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drivers/SVG/Fl_SVG_File_Surface.o: ../FL/platform_types.h
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drivers/X11/Fl_X11_Screen_Driver.o: ../config.h
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drivers/X11/Fl_X11_Screen_Driver.o: ../FL/abi-version.h
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drivers/X11/Fl_X11_Screen_Driver.o: ../FL/Enumerations.H
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@ -370,9 +370,9 @@ demo$(EXEEXT): demo.o
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$(OSX_ONLY) mkdir -p demo.app/Contents/Resources
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$(OSX_ONLY) cp -f demo.menu demo.app/Contents/Resources/
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device$(EXEEXT): device.o
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device$(EXEEXT): device.o $(IMGLIBNAME)
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echo Linking $@...
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$(CXX) $(ARCHFLAGS) $(CXXFLAGS) $(LDFLAGS) device.o -o $@ $(LINKFLTK) $(IMAGELIBS) $(LDLIBS)
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$(CXX) $(ARCHFLAGS) $(CXXFLAGS) $(LDFLAGS) device.o -o $@ $(LINKFLTKIMG) $(LDLIBS)
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$(OSX_ONLY) ../fltk-config --post $@
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doublebuffer$(EXEEXT): doublebuffer.o
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@ -530,6 +530,7 @@ device.o: ../FL/Fl_Light_Button.H
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device.o: ../FL/Fl_Menu_.H
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device.o: ../FL/Fl_Menu_Button.H
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device.o: ../FL/Fl_Menu_Item.H
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device.o: ../FL/Fl_Native_File_Chooser.H
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device.o: ../FL/Fl_Overlay_Window.H
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device.o: ../FL/Fl_Paged_Device.H
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device.o: ../FL/Fl_Pixmap.H
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@ -544,6 +545,7 @@ device.o: ../FL/Fl_Round_Button.H
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device.o: ../FL/Fl_Scrollbar.H
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device.o: ../FL/Fl_Shared_Image.H
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device.o: ../FL/Fl_Slider.H
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device.o: ../FL/Fl_SVG_File_Surface.H
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device.o: ../FL/Fl_Tile.H
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device.o: ../FL/fl_types.h
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device.o: ../FL/fl_utf8.h
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@ -1492,6 +1494,7 @@ pixmap_browser.o: ../FL/Fl_Menu_.H
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pixmap_browser.o: ../FL/Fl_Menu_Button.H
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pixmap_browser.o: ../FL/Fl_Menu_Item.H
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pixmap_browser.o: ../FL/fl_message.H
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pixmap_browser.o: ../FL/Fl_Native_File_Chooser.H
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pixmap_browser.o: ../FL/Fl_Paged_Device.H
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pixmap_browser.o: ../FL/Fl_Plugin.H
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pixmap_browser.o: ../FL/Fl_Preferences.H
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@ -1500,6 +1503,7 @@ pixmap_browser.o: ../FL/Fl_Return_Button.H
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pixmap_browser.o: ../FL/Fl_Scrollbar.H
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pixmap_browser.o: ../FL/Fl_Shared_Image.H
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pixmap_browser.o: ../FL/Fl_Slider.H
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pixmap_browser.o: ../FL/Fl_SVG_File_Surface.H
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pixmap_browser.o: ../FL/Fl_Tile.H
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pixmap_browser.o: ../FL/fl_types.h
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pixmap_browser.o: ../FL/fl_utf8.h
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Reference in New Issue
Block a user