diff options
Diffstat (limited to 'dvi/painter.cc')
| -rwxr-xr-x | dvi/painter.cc | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/dvi/painter.cc b/dvi/painter.cc new file mode 100755 index 0000000..a1bb758 --- /dev/null +++ b/dvi/painter.cc @@ -0,0 +1,334 @@ +#include "painter.hh" +#include "dl-dvi-fontdefinition.hh" + +using DviLib::DviFontdefinition; +using DviLib::AbstractCharacter; + +// paint a bitmap +void +DviPainter::paint_bitmap (const unsigned char *data, + uint width, uint height, + int hoffset, int voffset) +{ + GdkPixbuf *pixbuf = + gdk_pixbuf_new_from_data (data, + GDK_COLORSPACE_RGB, + TRUE, // has_alpha, + 8, + width, + height, + width * 4, // rowstride + NULL, // destroy_fn + NULL); // destroy_fn_data + + uint x = dvi_to_pixels (current_frame->h); + uint y = dvi_to_pixels (current_frame->v); + + gdk_pixbuf_render_to_drawable (pixbuf, + pixmap, + gc, + 0, 0, + x-hoffset, + y-voffset, + //y+(height - voffset), + width, + height, + GDK_RGB_DITHER_NONE, + 0, 0); +} + +// typeset ch, move w +void +DviPainter::set_char (int ch) +{ + g_assert (current_font); + + AbstractCharacter *character = current_font->get_char (ch); + character->paint (* this); + + int tfm_width = character->get_tfm_width (); + int at_size = current_font->get_at_size (); + int dvi_width = tfm_to_dvi (tfm_width, at_size); + + current_frame->h += dvi_width; +} + +// typeset ch, don't move +void +DviPainter::put_char (int ch) +{ + AbstractCharacter *character = current_font->get_char (ch); + character->paint (* this); +} + +void +// rule, move (height, width) +DviPainter::set_rule (int height, + int width) +{ + int width_p = dvi_to_pixels_no_offset (width); + int height_p = dvi_to_pixels_no_offset (height); + int x = dvi_to_pixels (current_frame->h); + int y = dvi_to_pixels (current_frame->v); + + cout << "BIRNAN\n" << endl; + + gdk_draw_rectangle (pixmap, gc, TRUE, + x, y, + width_p + 1, height_p + 1); + + current_frame->h += width; +} + +// rule, don't move +void +DviPainter::put_rule (int height, + int width) +{ + cout << "w h " << width << " " << height << " " << endl; + + int width_p = dvi_to_pixels_no_offset (width); + int height_p = dvi_to_pixels_no_offset (height); + int x = dvi_to_pixels (current_frame->h); + int y = dvi_to_pixels (current_frame->v); + + cout << "EMFLE\n" << endl; + + cout << "x y h w " << x << " " << y << " " << height_p << " " + << width_p << endl; + + gdk_draw_rectangle (pixmap, gc, TRUE, + x, y, + width_p + 1, height_p + 1); +} + +// push current context +DviFrame * +DviFrame::copy (void) +{ + DviFrame *frame = new DviFrame (); + + frame->h = this->h; + frame->v = this->v; + frame->w = this->w; + frame->x = this->x; + frame->y = this->y; + frame->z = this->z; + + return frame; +} + +void +DviPainter::push (void) +{ + DviFrame *new_frame = current_frame->copy(); + new_frame->next = current_frame; + current_frame = new_frame; +} + +// pop ccontext +void +DviPainter::pop (void) +{ + DviFrame *old_frame = current_frame; + + current_frame = current_frame->next; + + old_frame->unref(); +} + +// move right len +void +DviPainter::right (int len) +{ + current_frame->h += len; +} + +// move right len, set w = len +void +DviPainter::w (int len) +{ + right (len); + current_frame->w = len; +} + +// move right w +void +DviPainter::w_rep () +{ + right (current_frame->w); +} + +// move right len, set x = len +void +DviPainter::x (int len) +{ + right (len); + current_frame->x = len; +} + +// move right x +void +DviPainter::x_rep () +{ + right (current_frame->x); +} + +// move down len +void +DviPainter::down (int len) +{ + current_frame->v += len; +} + +// move down len, set y = len +void +DviPainter::y (int len) +{ + down (len); + current_frame->y = len; +} + +// move down y +void +DviPainter::y_rep () +{ + down (current_frame->y); +} + +// move down len, set z = len +void +DviPainter::z (int len) +{ + down (len); + current_frame->z = len; +} + +// move down z +void +DviPainter::z_rep () +{ + down (current_frame->z); +} + +// f = font_num +void +DviPainter::font_num (int font_num) +{ + cout << "get fno " << font_num << endl; + DviFontdefinition *fd = dvi_file->get_fontdefinition (font_num); + + g_assert (fd); + if (fd) + { + // gtkdvi: + int dpi = (int)floor( 0.5 + 1.0 * base_dpi * + dvi_file->get_magnification() * fd->at_size / + ( 1000.0 * fd->design_size)); + cout << "fno: " << fd->fontnum << endl; + cout << fd->name << endl; + current_font = + font_factory->create_font (fd->name, dpi, fd->at_size); + } +} + +// do something special +void +DviPainter::special (string spc) +{ + cout << "warning: special " << spc << " " << "not handled" << endl; +} + +int +DviPainter::tfm_to_dvi (uint tfm, int at_size) +{ + // this is from gtkdvi: + int alpha, z, beta, b0, b1, b2, b3, r; + + alpha = 16; + z = at_size; + while (z >= (1<<23)) + { + z >>= 1; + alpha <<= 1; + } + beta = 256/alpha; + alpha *= z; + +#if 0 + b0 = tfm & (0xFF << 24); + b1 = tfm & (0xFF << 16); + b2 = tfm & (0xFF << 8); + b3 = tfm & (0xFF << 0); +#endif + + b0 = tfm >> 24; + b1 = (tfm >> 16) & 255; + b2 = (tfm >> 8) & 255; + b3 = tfm & 255; + +#if 0 + r = (((((b3 * z) / 256) + (b2 * z)) / 256) + (b1 * z))/beta; +#endif + + b1 *= z; + b2 *= z; + b3 *= z; + + r = (((b3 / 256 + b2) / 256) + b1) / beta; + + if (b0 > 0) + { + if ((b0 > 0) != (tfm > 0)) + cout << "b0: " << b0 << "tfm: " << tfm << endl; + r -= alpha; + } + + return r; +} + +DviPainter::DviPainter (GdkPixmap *pixmap_arg, + GdkGC *gc_arg, + DviLib::DviFile *dvi_file_arg, + uint base_dpi_arg, + AbstractFontFactory *font_factory_arg) +{ + pixmap = (GdkPixmap *)g_object_ref (pixmap_arg); + gc = (GdkGC *)g_object_ref (gc_arg); + dvi_file = dvi_file_arg; + base_dpi = base_dpi_arg; + font_factory = font_factory_arg; + + dvi_file->ref(); + font_factory->ref(); + + current_font = 0; + + current_frame = new DviFrame; + current_frame->h = 0; + current_frame->v = 0; + current_frame->w = 0; + current_frame->x = 0; + current_frame->y = 0; + current_frame->z = 0; + + // from gtkdvi: + scale = dvi_file->get_numerator() / 254000.0; + scale *= 1.0 * base_dpi / dvi_file->get_denominator (); + scale *= dvi_file->get_magnification () / 1000.0; +} + +DviPainter::~DviPainter () +{ + g_object_unref (pixmap); + g_object_unref (gc); + dvi_file->unref(); + font_factory->unref(); + while (current_frame) + pop(); +} + +void +DviPainter::push_fontmap (std::map<int, DviFontdefinition *> fontmap) +{ +} |