/* * Copyright (c) 1994 Paul Vojta. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * NOTE: * xdvi is based on prior work as noted in the modification history, below. */ /* * DVI previewer for X. * * Eric Cooper, CMU, September 1985. * * Code derived from dvi-imagen.c. * * Modification history: * 1/1986 Modified for X.10 --Bob Scheifler, MIT LCS. * 7/1988 Modified for X.11 --Mark Eichin, MIT * 12/1988 Added 'R' option, toolkit, magnifying glass * --Paul Vojta, UC Berkeley. * 2/1989 Added tpic support --Jeffrey Lee, U of Toronto * 4/1989 Modified for System V --Donald Richardson, Clarkson Univ. * 3/1990 Added VMS support --Scott Allendorf, U of Iowa * 7/1990 Added reflection mode --Michael Pak, Hebrew U of Jerusalem * 1/1992 Added greyscale code --Till Brychcy, Techn. Univ. Muenchen * and Lee Hetherington, MIT * 4/1994 Added DPS support, bounding box * --Ricardo Telichevesky * and Luis Miguel Silveira, MIT RLE. */ //#define DEBUG_RENDER 0 #include #include "dviRenderer.h" #include "dvi.h" #include "dviFile.h" #include "fontpool.h" #include "hyperlink.h" #include "kdvi_multipage.h" #include "performanceMeasurement.h" #include "psgs.h" #include "renderedDviPagePixmap.h" #include "TeXFont.h" #include "textBox.h" #include "xdvi.h" #include #include #include #include #include #include #include #include #include extern QPainter *foreGroundPainter; /** Routine to print characters. */ void dviRenderer::set_char(unsigned int cmd, unsigned int ch) { #ifdef DEBUG_RENDER kdDebug(4300) << "set_char #" << ch << endl; #endif glyph *g; if (colorStack.isEmpty()) g = ((TeXFont *)(currinf.fontp->font))->getGlyph(ch, true, globalColor); else g = ((TeXFont *)(currinf.fontp->font))->getGlyph(ch, true, colorStack.top()); if (g == NULL) return; long dvi_h_sav = currinf.data.dvi_h; QPixmap pix = g->shrunkenCharacter; int x = ((int) ((currinf.data.dvi_h) / (shrinkfactor * 65536))) - g->x2; int y = currinf.data.pxl_v - g->y2; // Draw the character. foreGroundPainter->drawPixmap(x, y, pix); // Are we drawing text for a hyperlink? And are hyperlinks // enabled? if (HTML_href != NULL) { // Now set up a rectangle which is checked against every mouse // event. if (line_boundary_encountered == true) { // Set up hyperlink Hyperlink dhl; dhl.baseline = currinf.data.pxl_v; dhl.box.setRect(x, y, pix.width(), pix.height()); dhl.linkText = *HTML_href; currentlyDrawnPage->hyperLinkList.push_back(dhl); } else { QRect dshunion = currentlyDrawnPage->hyperLinkList[currentlyDrawnPage->hyperLinkList.size()-1].box.unite(QRect(x, y, pix.width(), pix.height())) ; currentlyDrawnPage->hyperLinkList[currentlyDrawnPage->hyperLinkList.size()-1].box = dshunion; } } // Are we drawing text for a source hyperlink? And are source // hyperlinks enabled? // If we are printing source hyperlinks are irrelevant, otherwise we // actually got a pointer to a RenderedDviPagePixmap. RenderedDviPagePixmap* currentDVIPage = dynamic_cast(currentlyDrawnPage); if (source_href != 0 && currentDVIPage) { // Now set up a rectangle which is checked against every mouse // event. if (line_boundary_encountered == true) { // Set up source hyperlinks Hyperlink dhl; dhl.baseline = currinf.data.pxl_v; dhl.box.setRect(x, y, pix.width(), pix.height()); if (source_href != NULL) dhl.linkText = *source_href; else dhl.linkText = ""; currentDVIPage->sourceHyperLinkList.push_back(dhl); } else { QRect dshunion = currentDVIPage->sourceHyperLinkList[currentDVIPage->sourceHyperLinkList.size()-1].box.unite(QRect(x, y, pix.width(), pix.height())) ; currentDVIPage->sourceHyperLinkList[currentDVIPage->sourceHyperLinkList.size()-1].box = dshunion; } } // Code for DVI -> text functions (e.g. marking of text, full text // search, etc.). Set up the currentlyDrawnPage->textBoxList. TextBox link; link.box.setRect(x, y, pix.width(), pix.height()); link.text = ""; currentlyDrawnPage->textBoxList.push_back(link); switch(ch) { case 0x0b: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "ff"; break; case 0x0c: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "fi"; break; case 0x0d: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "fl"; break; case 0x0e: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "ffi"; break; case 0x0f: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "ffl"; break; case 0x7b: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "-"; break; case 0x7c: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "---"; break; case 0x7d: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "\""; break; case 0x7e: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "~"; break; case 0x7f: currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "@@"; // @@@ check! break; default: if ((ch >= 0x21) && (ch <= 0x7a)) currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += QChar(ch); else currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += "?"; break; } if (cmd == PUT1) currinf.data.dvi_h = dvi_h_sav; else currinf.data.dvi_h += (int)(currinf.fontp->scaled_size_in_DVI_units * dviFile->getCmPerDVIunit() * (1200.0 / 2.54)/16.0 * g->dvi_advance_in_units_of_design_size_by_2e20 + 0.5); word_boundary_encountered = false; line_boundary_encountered = false; } void dviRenderer::set_empty_char(unsigned int, unsigned int) { return; } void dviRenderer::set_vf_char(unsigned int cmd, unsigned int ch) { #ifdef DEBUG_RENDER kdDebug(4300) << "dviRenderer::set_vf_char( cmd=" << cmd << ", ch=" << ch << " )" << endl; #endif static unsigned char c; macro *m = &currinf.fontp->macrotable[ch]; if (m->pos == NULL) { kdError(4300) << "Character " << ch << " not defined in font " << currinf.fontp->fontname << endl; m->pos = m->end = &c; return; } long dvi_h_sav = currinf.data.dvi_h; struct drawinf oldinfo = currinf; currinf.data.w = 0; currinf.data.x = 0; currinf.data.y = 0; currinf.data.z = 0; currinf.fonttable = &(currinf.fontp->vf_table); currinf._virtual = currinf.fontp; Q_UINT8 *command_ptr_sav = command_pointer; Q_UINT8 *end_ptr_sav = end_pointer; command_pointer = m->pos; end_pointer = m->end; draw_part(currinf.fontp->scaled_size_in_DVI_units*(dviFile->getCmPerDVIunit() * 1200.0 / 2.54)/16.0, true); command_pointer = command_ptr_sav; end_pointer = end_ptr_sav; currinf = oldinfo; if (cmd == PUT1) currinf.data.dvi_h = dvi_h_sav; else currinf.data.dvi_h += (int)(currinf.fontp->scaled_size_in_DVI_units * dviFile->getCmPerDVIunit() * (1200.0 / 2.54)/16.0 * m->dvi_advance_in_units_of_design_size_by_2e20 + 0.5); } void dviRenderer::set_no_char(unsigned int cmd, unsigned int ch) { #ifdef DEBUG_RENDER kdDebug(4300) << "dviRenderer::set_no_char( cmd=" << cmd << ", ch =" << ch << " )" << endl; #endif if (currinf._virtual) { currinf.fontp = currinf._virtual->first_font; if (currinf.fontp != NULL) { currinf.set_char_p = currinf.fontp->set_char_p; (this->*currinf.set_char_p)(cmd, ch); return; } } errorMsg = i18n("The DVI code set a character of an unknown font."); return; } void dviRenderer::draw_part(double current_dimconv, bool is_vfmacro) { #ifdef DEBUG_RENDER kdDebug(4300) << "draw_part" << endl; #endif Q_INT32 RRtmp=0, WWtmp=0, XXtmp=0, YYtmp=0, ZZtmp=0; Q_UINT8 ch; currinf.fontp = NULL; currinf.set_char_p = &dviRenderer::set_no_char; for (;;) { ch = readUINT8(); if (ch <= (unsigned char) (SETCHAR0 + 127)) { (this->*currinf.set_char_p)(ch, ch); } else if (FNTNUM0 <= ch && ch <= (unsigned char) (FNTNUM0 + 63)) { currinf.fontp = currinf.fonttable->find(ch - FNTNUM0); if (currinf.fontp == NULL) { errorMsg = i18n("The DVI code referred to font #%1, which was not previously defined.").arg(ch - FNTNUM0); return; } currinf.set_char_p = currinf.fontp->set_char_p; } else { Q_INT32 a, b; switch (ch) { case SET1: case PUT1: (this->*currinf.set_char_p)(ch, readUINT8()); break; case SETRULE: if (is_vfmacro == false) { word_boundary_encountered = true; line_boundary_encountered = true; } /* Be careful, dvicopy outputs rules with height = 0x80000000. We don't want any SIGFPE here. */ a = readUINT32(); b = readUINT32(); b = ((long) (b * current_dimconv)); if (a > 0 && b > 0) { int h = ((int) ROUNDUP(((long) (a * current_dimconv)), shrinkfactor * 65536)); int w = ((int) ROUNDUP(b, shrinkfactor * 65536)); if (colorStack.isEmpty()) foreGroundPainter->fillRect( ((int) ((currinf.data.dvi_h) / (shrinkfactor * 65536))), currinf.data.pxl_v - h + 1, w?w:1, h?h:1, globalColor ); else foreGroundPainter->fillRect( ((int) ((currinf.data.dvi_h) / (shrinkfactor * 65536))), currinf.data.pxl_v - h + 1, w?w:1, h?h:1, colorStack.top() ); } currinf.data.dvi_h += b; break; case PUTRULE: if (is_vfmacro == false) { word_boundary_encountered = true; line_boundary_encountered = true; } a = readUINT32(); b = readUINT32(); a = ((long) (a * current_dimconv)); b = ((long) (b * current_dimconv)); if (a > 0 && b > 0) { int h = ((int) ROUNDUP(a, shrinkfactor * 65536)); int w = ((int) ROUNDUP(b, shrinkfactor * 65536)); if (colorStack.isEmpty()) foreGroundPainter->fillRect( ((int) ((currinf.data.dvi_h) / (shrinkfactor * 65536))), currinf.data.pxl_v - h + 1, w?w:1, h?h:1, globalColor ); else foreGroundPainter->fillRect( ((int) ((currinf.data.dvi_h) / (shrinkfactor * 65536))), currinf.data.pxl_v - h + 1, w?w:1, h?h:1, colorStack.top() ); } break; case NOP: break; case BOP: if (is_vfmacro == false) { word_boundary_encountered = true; line_boundary_encountered = true; } command_pointer += 11 * 4; currinf.data.dvi_h = 1200 << 16; // Reminder: DVI-coordinates start at (1",1") from top of page currinf.data.dvi_v = 1200; currinf.data.pxl_v = int(currinf.data.dvi_v/shrinkfactor); currinf.data.w = currinf.data.x = currinf.data.y = currinf.data.z = 0; break; case EOP: // Check if we are just at the end of a virtual font macro. if (is_vfmacro == false) { // This is really the end of a page, and not just the end // of a macro. Mark the end of the current word. word_boundary_encountered = true; line_boundary_encountered = true; // Sanity check for the dvi-file: The DVI-standard asserts // that at the end of a page, the stack should always be // empty. if (!stack.isEmpty()) { kdDebug(4300) << "DRAW: The stack was not empty when the EOP command was encountered." << endl; errorMsg = i18n("The stack was not empty when the EOP command was encountered."); return; } } return; case PUSH: stack.push(currinf.data); break; case POP: if (stack.isEmpty()) { errorMsg = i18n("The stack was empty when a POP command was encountered."); return; } else currinf.data = stack.pop(); word_boundary_encountered = true; line_boundary_encountered = true; break; case RIGHT1: case RIGHT2: case RIGHT3: case RIGHT4: RRtmp = readINT(ch - RIGHT1 + 1); // A horizontal motion in the range 4 * font space [f] < h < // font space [f] will be treated as a kern that is not // indicated in the printouts that DVItype produces between // brackets. We allow a larger space in the negative // direction than in the positive one, because TEX makes // comparatively large backspaces when it positions // accents. (comments stolen from the source of dvitype) if ((is_vfmacro == false) && (currinf.fontp != 0) && ((RRtmp >= currinf.fontp->scaled_size_in_DVI_units/6) || (RRtmp <= -4*(currinf.fontp->scaled_size_in_DVI_units/6))) && (currentlyDrawnPage->textBoxList.size() > 0)) currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += ' '; currinf.data.dvi_h += ((long) (RRtmp * current_dimconv)); break; case W1: case W2: case W3: case W4: WWtmp = readINT(ch - W0); currinf.data.w = ((long) (WWtmp * current_dimconv)); case W0: if ((is_vfmacro == false) && (currinf.fontp != 0) && ((WWtmp >= currinf.fontp->scaled_size_in_DVI_units/6) || (WWtmp <= -4*(currinf.fontp->scaled_size_in_DVI_units/6))) && (currentlyDrawnPage->textBoxList.size() > 0) ) currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += ' '; currinf.data.dvi_h += currinf.data.w; break; case X1: case X2: case X3: case X4: XXtmp = readINT(ch - X0); currinf.data.x = ((long) (XXtmp * current_dimconv)); case X0: if ((is_vfmacro == false) && (currinf.fontp != 0) && ((XXtmp >= currinf.fontp->scaled_size_in_DVI_units/6) || (XXtmp <= -4*(currinf.fontp->scaled_size_in_DVI_units/6))) && (currentlyDrawnPage->textBoxList.size() > 0)) currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += ' '; currinf.data.dvi_h += currinf.data.x; break; case DOWN1: case DOWN2: case DOWN3: case DOWN4: { Q_INT32 DDtmp = readINT(ch - DOWN1 + 1); if ((is_vfmacro == false) && (currinf.fontp != 0) && (abs(DDtmp) >= 5*(currinf.fontp->scaled_size_in_DVI_units/6)) && (currentlyDrawnPage->textBoxList.size() > 0)) { word_boundary_encountered = true; line_boundary_encountered = true; if (abs(DDtmp) >= 10*(currinf.fontp->scaled_size_in_DVI_units/6)) currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += '\n'; } currinf.data.dvi_v += ((long) (DDtmp * current_dimconv))/65536; currinf.data.pxl_v = int(currinf.data.dvi_v/shrinkfactor); } break; case Y1: case Y2: case Y3: case Y4: YYtmp = readINT(ch - Y0); currinf.data.y = ((long) (YYtmp * current_dimconv)); case Y0: if ((is_vfmacro == false) && (currinf.fontp != 0) && (abs(YYtmp) >= 5*(currinf.fontp->scaled_size_in_DVI_units/6)) && (currentlyDrawnPage->textBoxList.size() > 0)) { word_boundary_encountered = true; line_boundary_encountered = true; if (abs(YYtmp) >= 10*(currinf.fontp->scaled_size_in_DVI_units/6)) currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += '\n'; } currinf.data.dvi_v += currinf.data.y/65536; currinf.data.pxl_v = int(currinf.data.dvi_v/shrinkfactor); break; case Z1: case Z2: case Z3: case Z4: ZZtmp = readINT(ch - Z0); currinf.data.z = ((long) (ZZtmp * current_dimconv)); case Z0: if ((is_vfmacro == false) && (currinf.fontp != 0) && (abs(ZZtmp) >= 5*(currinf.fontp->scaled_size_in_DVI_units/6)) && (currentlyDrawnPage->textBoxList.size() > 0)) { word_boundary_encountered = true; line_boundary_encountered = true; if (abs(ZZtmp) >= 10*(currinf.fontp->scaled_size_in_DVI_units/6)) currentlyDrawnPage->textBoxList[currentlyDrawnPage->textBoxList.size()-1].text += '\n'; } currinf.data.dvi_v += currinf.data.z/65536; currinf.data.pxl_v = int(currinf.data.dvi_v/shrinkfactor); break; case FNT1: case FNT2: case FNT3: currinf.fontp = currinf.fonttable->find(readUINT(ch - FNT1 + 1)); if (currinf.fontp == NULL) { errorMsg = i18n("The DVI code referred to a font which was not previously defined."); return; } currinf.set_char_p = currinf.fontp->set_char_p; break; case FNT4: currinf.fontp = currinf.fonttable->find(readINT(ch - FNT1 + 1)); if (currinf.fontp == NULL) { errorMsg = i18n("The DVI code referred to a font which was not previously defined."); return; } currinf.set_char_p = currinf.fontp->set_char_p; break; case XXX1: case XXX2: case XXX3: case XXX4: if (is_vfmacro == false) { word_boundary_encountered = true; line_boundary_encountered = true; } a = readUINT(ch - XXX1 + 1); if (a > 0) { char *cmd = new char[a+1]; strncpy(cmd, (char *)command_pointer, a); command_pointer += a; cmd[a] = '\0'; applicationDoSpecial(cmd); delete [] cmd; } break; case FNTDEF1: case FNTDEF2: case FNTDEF3: case FNTDEF4: command_pointer += 12 + ch - FNTDEF1 + 1; { Q_UINT8 tempa = readUINT8(); Q_UINT8 tempb = readUINT8(); command_pointer += tempa + tempb; } break; case PRE: case POST: case POSTPOST: errorMsg = i18n("An illegal command was encountered."); return; break; default: errorMsg = i18n("The unknown op-code %1 was encountered.").arg(ch); return; } /* end switch*/ } /* end else (ch not a SETCHAR or FNTNUM) */ } /* end for */ } void dviRenderer::draw_page() { // Reset a couple of variables HTML_href = 0; source_href = 0; penWidth_in_mInch = 0.0; // Calling resize() here rather than clear() means that the memory // taken up by the vector is not freed. This is faster than // constantly allocating/freeing memory. currentlyDrawnPage->textBoxList.resize(0); RenderedDviPagePixmap* currentDVIPage = dynamic_cast(currentlyDrawnPage); if (currentDVIPage) { currentDVIPage->sourceHyperLinkList.resize(0); } #ifdef PERFORMANCE_MEASUREMENT // If this is the first time a page is drawn, take the time that is // elapsed till the kdvi_multipage was constructed, and print // it. Set the flag so that is message will not be printed again. if (performanceFlag == 0) { kdDebug(4300) << "Time elapsed till the first page is drawn: " << performanceTimer.restart() << "ms" << endl; performanceFlag = 1; } #endif #ifdef DEBUG_RENDER kdDebug(4300) <<"draw_page" << endl; #endif if (!accessibilityBackground) { foreGroundPainter->fillRect( foreGroundPainter->viewport(), PS_interface->getBackgroundColor(current_page) ); } else { // In accessiblity mode use the custom background color foreGroundPainter->fillRect( foreGroundPainter->viewport(), accessibilityBackgroundColor ); } // Render the PostScript background, if there is one. if (_postscript) { // In accessiblity mode use the custom background color if (accessibilityBackground) { // Flag permanent is set to false because otherwise we would not be able to restore // the original background color. PS_interface->setBackgroundColor(current_page, accessibilityBackgroundColor, false); } else PS_interface->restoreBackgroundColor(current_page); PS_interface->graphics(current_page, resolutionInDPI, dviFile->getMagnification(), foreGroundPainter); } // Now really write the text if (dviFile->page_offset.isEmpty() == true) return; if (current_page < dviFile->total_pages) { command_pointer = dviFile->dvi_Data() + dviFile->page_offset[current_page]; end_pointer = dviFile->dvi_Data() + dviFile->page_offset[current_page+1]; } else command_pointer = end_pointer = 0; memset((char *) &currinf.data, 0, sizeof(currinf.data)); currinf.fonttable = &(dviFile->tn_table); currinf._virtual = 0; double fontPixelPerDVIunit = dviFile->getCmPerDVIunit() * 1200.0/2.54; draw_part(65536.0*fontPixelPerDVIunit, false); if (HTML_href != 0) { delete HTML_href; HTML_href = 0; } if (source_href != 0) { delete source_href; source_href = 0; } }