Link destionation includes rectangle on page.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3695 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Pfeiffer
parent
61594003dd
commit
2e07400817
@ -37,53 +37,43 @@ THE SOFTWARE.
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#include "Log.h"
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#include "Report.h"
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Link::Link(PDFWriter* writer, BString* utf8, BFont* font)
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Link::Link(PDFWriter* writer, BString* utf8)
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: fWriter(writer)
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, fUtf8(utf8)
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, fFont(font)
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, fPos(0)
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, fContainsLink(false)
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{
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}
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bool
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Link::BoundingBox(BRect* rect) {
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return fWriter->fTextLine.BoundingBox(fStartPos, fEndPos+1, rect);
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}
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// create link from fStartPos to fEndPos and fStart to end
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void
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Link::CreateLink(BPoint end)
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Link::CreateLink()
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{
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if (fFont->Rotation() != 0.0) {
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static bool reported = false; // report warning once only
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BRect bounds;
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if (BoundingBox(&bounds)) {
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CreateLink(bounds.left, bounds.bottom, bounds.right, bounds.top);
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} else if (!reported) {
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REPORT(kWarning, fWriter->fPage, "Warning: Can not create link for rotated font!");
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return;
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reported = true;
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}
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// calculate rectangle for url
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font_height height;
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fFont->GetHeight(&height);
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float llx, lly, urx, ury;
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llx = fWriter->tx(fStart.x);
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urx = fWriter->tx(end.x);
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lly = fWriter->ty(fStart.y + height.descent);
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ury = fWriter->ty(end.y - height.ascent);
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CreateLink(llx, lly, urx, ury);
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}
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void
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Link::NextChar(int cps, float x, float y, float w)
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{
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if (fContainsLink) {
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if (fPos == fStartPos) {
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fStart.Set(x, y);
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Link::Do() {
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int pos = 0;
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do {
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DetectLink(pos);
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if (ContainsLink()) {
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CreateLink();
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pos = fEndPos;
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}
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if (fPos == fEndPos) {
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CreateLink(BPoint(x + w, y));
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DetectLink(fPos + cps);
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}
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fPos += cps;
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}
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} while (ContainsLink());
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}
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// TODO: check this list and add more prefixes
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@ -292,8 +282,8 @@ WebLink::CreateLink(float llx, float lly, float urx, float ury)
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}
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WebLink::WebLink(PDFWriter* writer, BString* utf8, BFont* font)
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: Link(writer, utf8, font)
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WebLink::WebLink(PDFWriter* writer, BString* utf8)
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: Link(writer, utf8)
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{
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}
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@ -371,6 +361,78 @@ bool TextLine::Follows(TextSegment* segment) const {
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return false;
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}
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bool TextLine::BoundingBox(int startPos, int endPos, BRect* bounds) {
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const int32 n = fSegments.CountItems();
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if (n == 0) return false;
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// build the text in the line
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BString line;
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for (int32 i = 0; i < n; i ++) {
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line << fSegments.ItemAt(i)->Text();
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}
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const char* c = line.String();
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const char* pStart = &c[startPos];
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const char* pEnd = &c[endPos];
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for (int32 i = 0; i < n; i ++) {
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TextSegment* seg = fSegments.ItemAt(i);
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BPoint pos = seg->Start();
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BFont* font = seg->Font();
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const char* sc = seg->Text();
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float escpSpace = seg->EscpSpace();
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float escpNoSpace = seg->EscpNoSpace();
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int32 spaces = seg->Spaces();
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PDFSystem* system = seg->System();
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while (*sc != 0) {
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ASSERT(*sc == *c);
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int s = fWriter->CodePointSize((char*)c);
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float w = font->StringWidth(c, s);
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if (c == pStart) {
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bounds->left = bounds->right = system->tx(pos.x);
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bounds->top = bounds->bottom = system->ty(pos.y);
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}
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if (pStart <= c && c < pEnd) {
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font_height height;
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font->GetHeight(&height);
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float top = system->ty(pos.y - height.ascent);
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float bottom = system->ty(pos.y + height.descent);
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if (bounds->top < top) bounds->top = top;
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if (bounds->bottom > bottom) bounds->bottom = bottom;
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bounds->right = system->tx(pos.x+w);
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}
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if (spaces == 0) {
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// position of next character
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if (*(unsigned char*)c <= 0x20) { // should test if c is a white-space!
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w += escpSpace;
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} else {
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w += escpNoSpace;
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}
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pos.x += w;
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} else {
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// skip over the prepended spaces
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spaces --;
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}
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// next character
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c += s; sc += s;
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if (c >= pEnd) {
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return true;
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}
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}
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}
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return false;
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}
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void TextLine::Flush() {
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const int32 n = fSegments.CountItems();
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@ -387,65 +449,28 @@ void TextLine::Flush() {
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if (!fWriter->MakesPDF()) {
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if (fWriter->fCreateXRefs) fWriter->RecordDests(c);
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} else {
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// XXX
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TextSegment* s = fSegments.ItemAt(0);
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BFont* f = s->Font();
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// simple link handling for now
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WebLink webLink(fWriter, &line, f);
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if (fWriter->fCreateWebLinks) webLink.Init();
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WebLink webLink(fWriter, &line);
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if (fWriter->fCreateWebLinks) webLink.Do();
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// local links
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LocalLink localLink(fWriter->fXRefs, fWriter->fXRefDests, fWriter, &line, f, fWriter->fPage);
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if (fWriter->fCreateXRefs) localLink.Init();
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LocalLink localLink(fWriter->fXRefs, fWriter->fXRefDests, fWriter, &line, fWriter->fPage);
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if (fWriter->fCreateXRefs) localLink.Do();
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// simple bookmark adding (XXX: s->Start()
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// simple bookmark adding
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if (fWriter->fCreateBookmarks) {
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BPoint start(s->System()->tx(s->Start().x), s->System()->ty(s->Start().y));
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fWriter->fBookmark->AddBookmark(start, c, f);
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}
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TextSegment* s = fSegments.ItemAt(0);
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BFont* f = s->Font();
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PDFSystem* system = s->System();
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BPoint start(system->tx(s->Start().x), system->ty(s->Start().y));
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for (int32 i = 0; i < n; i ++) {
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TextSegment* seg = fSegments.ItemAt(i);
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BPoint pos = seg->Start();
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BFont* font = seg->Font();
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const char* sc = seg->Text();
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float escpSpace = seg->EscpSpace();
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float escpNoSpace = seg->EscpNoSpace();
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int32 spaces = seg->Spaces();
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while (*sc != 0) {
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ASSERT(*sc == *c);
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int s = fWriter->CodePointSize((char*)c);
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float w = font->StringWidth(c, s);
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if (fWriter->fCreateWebLinks) webLink.NextChar(s, pos.x, pos.y, w);
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if (fWriter->fCreateXRefs) localLink.NextChar(s, pos.x, pos.y, w);
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if (spaces == 0) {
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// position of next character
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if (*(unsigned char*)c <= 0x20) { // should test if c is a white-space!
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w += escpSpace;
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} else {
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w += escpNoSpace;
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}
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pos.x += w;
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} else {
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// skip over the prepended spaces
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spaces --;
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}
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// next character
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c += s; sc += s;
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}
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font_height height;
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f->GetHeight(&height);
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float h = system->scale(height.ascent);
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fWriter->fBookmark->AddBookmark(start, h, c, f);
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}
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}
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fSegments.MakeEmpty();
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}
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@ -37,26 +37,28 @@ THE SOFTWARE.
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class PDFWriter;
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class TextLine;
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class Link {
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protected:
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PDFWriter* fWriter;
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BString* fUtf8;
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BFont* fFont;
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int fPos; // into fUtf8
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bool fContainsLink;
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int fStartPos, fEndPos;
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BPoint fStart;
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virtual void DetectLink(int start) = 0;
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virtual void CreateLink(float llx, float lly, float urx, float ury) = 0;
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void CreateLink(BPoint end);
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void CreateLink();
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bool ContainsLink() const { return fContainsLink; }
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private:
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bool BoundingBox(BRect* rect);
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public:
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Link(PDFWriter* writer, BString* utf8, BFont* font);
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void Init() { DetectLink(0); }
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void NextChar(int cps, float x, float y, float w);
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Link(PDFWriter* writer, BString* utf8);
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void Do();
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};
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class WebLink : public Link {
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@ -82,7 +84,7 @@ class WebLink : public Link {
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void DetectLink(int start);
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public:
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WebLink(PDFWriter* writer, BString* utf8, BFont* font);
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WebLink(PDFWriter* writer, BString* utf8);
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};
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class TextSegment {
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@ -122,6 +124,8 @@ public:
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void Add(TextSegment* segment);
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void Flush();
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// startPos inclusive, endPos exclusive
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bool BoundingBox(int startPos, int endPos, BRect* bounds);
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};
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@ -321,7 +321,7 @@ PDFWriter::CodePointSize(const char* s)
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void PDFWriter::RecordDests(const char* s) {
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::RecordDests record(fXRefDests, fPage);
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::RecordDests record(fXRefDests, &fTextLine, fPage);
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fXRefs->Matches(s, &record, true);
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}
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@ -214,7 +214,7 @@ Line comment starts with: '#'
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Definition = Version {XRefDef}.
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Version = "CrossReferences" "1.0".
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XRefDef = Pattern {"," Pattern} "-" ">" Pattern {, Pattern} ".".
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XRefDef = Pattern {"," Pattern} "-" ">" Pattern {"," Pattern} ".".
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Pattern = '"' string '"'.
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Example:
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@ -301,9 +301,10 @@ bool XRefDefs::Read(const char* name) {
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// Destination
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Destination::Destination(const char* label, int32 page)
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Destination::Destination(const char* label, int32 page, BRect bounds)
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: fLabel(label)
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, fPage(page)
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, fBoundingBox(bounds)
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{
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}
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@ -336,23 +337,24 @@ XRefDests::XRefDests(int32 n) {
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}
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bool XRefDests::Add(XRefDef* def, const char* label, int32 page) {
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bool XRefDests::Add(XRefDef* def, const char* label, int32 page, BRect boundingBox) {
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DestList* list = GetList(def);
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ASSERT(list != NULL);
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if (!list->Find(label)) {
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list->AddItem(new Destination(label, page));
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list->AddItem(new Destination(label, page, boundingBox));
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return true;
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}
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return false;
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}
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bool XRefDests::Find(XRefDef* def, const char* label, int32* page) const {
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bool XRefDests::Find(XRefDef* def, const char* label, int32* page, BRect* boundingBox) const {
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DestList* list = GetList(def);
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ASSERT(list != NULL);
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Destination* dest = list->Find(label);
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if (dest) {
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*page = dest->Page();
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*boundingBox = dest->BoundingBox();
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return true;
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}
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return false;
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@ -361,13 +363,13 @@ bool XRefDests::Find(XRefDef* def, const char* label, int32* page) const {
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// RecordDests
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RecordDests::RecordDests(XRefDests* dests, int32 page)
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RecordDests::RecordDests(XRefDests* dests, TextLine* line, int32 page)
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: fDests(dests)
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, fLine(line)
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, fPage(page)
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{
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}
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bool RecordDests::Link(XRefDef* def, MatchResult* result) {
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return true;
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}
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@ -376,8 +378,11 @@ bool RecordDests::Link(XRefDef* def, MatchResult* result) {
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bool RecordDests::Dest(XRefDef* def, MatchResult* result) {
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if (result->CountResults() >= 2) {
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BString s;
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BRect b;
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result->GetString(1, &s);
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fDests->Add(def, s.String(), fPage);
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if (fLine->BoundingBox(result->StartPos(1), result->EndPos(1), &b)) {
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fDests->Add(def, s.String(), fPage, b);
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}
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}
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return true;
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}
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@ -385,8 +390,8 @@ bool RecordDests::Dest(XRefDef* def, MatchResult* result) {
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// LocalLink
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LocalLink::LocalLink(XRefDefs* defs, XRefDests* dests, PDFWriter* writer, BString* utf8, BFont* font, int32 page)
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: ::Link(writer, utf8, font)
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LocalLink::LocalLink(XRefDefs* defs, XRefDests* dests, PDFWriter* writer, BString* utf8, int32 page)
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: ::Link(writer, utf8)
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, fDefs(defs)
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, fDests(dests)
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, fLinkPage(page)
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@ -398,7 +403,7 @@ bool LocalLink::Link(XRefDef* def, MatchResult* result) {
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if (result->CountResults() >= 2) {
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BString label;
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result->GetString(1, &label);
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if (fDests->Find(def, label.String(), &fDestPage)) {
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if (fDests->Find(def, label.String(), &fDestPage, &fDestBounds)) {
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result->Start(1);
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fContainsLink = true;
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fStartPos = result->Start(1) - fUtf8->String();
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@ -428,9 +433,11 @@ void LocalLink::DetectLink(int start) {
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void LocalLink::CreateLink(float llx, float lly, float urx, float ury) {
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char optList[256];
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if (fDestPage != fLinkPage) {
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BString s(&fUtf8->String()[fStartPos], fEndPos-fStartPos+1);
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REPORT(kInfo, fLinkPage, "Link '%s' to page %d", s.String(), fDestPage);
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PDF_add_locallink(fWriter->fPdf, llx, lly, urx, ury, fDestPage, "retain");
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sprintf(optList, "type=fixed left=%f top=%f", fDestBounds.left, fDestBounds.top);
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PDF_add_locallink(fWriter->fPdf, llx, lly, urx, ury, fDestPage, optList);
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}
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}
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@ -168,11 +168,13 @@ class Destination {
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private:
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BString fLabel;
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int32 fPage;
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BRect fBoundingBox;
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public:
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Destination(const char* label, int32 page);
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Destination(const char* label, int32 page, BRect bounds);
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const char* Label() const { return fLabel.String(); }
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int32 Page() const { return fPage; }
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BRect BoundingBox() const { return fBoundingBox; }
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};
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@ -194,8 +196,8 @@ class XRefDests {
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public:
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XRefDests(int32 n);
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bool Add(XRefDef* def, const char* label, int32 page);
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bool Find(XRefDef* def, const char* label, int32* page) const;
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bool Add(XRefDef* def, const char* label, int32 page, BRect boundingBox);
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bool Find(XRefDef* def, const char* label, int32* page, BRect* boundingBox) const;
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};
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@ -203,10 +205,11 @@ public:
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class RecordDests : public XMatchResult {
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XRefDests* fDests;
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TextLine* fLine;
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int32 fPage;
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public:
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RecordDests(XRefDests* dests, int32 page);
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RecordDests(XRefDests* dests, TextLine* line, int32 page);
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bool Link(XRefDef* def, MatchResult* result);
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bool Dest(XRefDef* def, MatchResult* result);
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};
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@ -217,15 +220,17 @@ public:
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class LocalLink : public Link, XMatchResult {
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protected:
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XRefDefs* fDefs;
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XRefDests* fDests;
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XRefDests* fDests;
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int32 fLinkPage;
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int32 fLinkPage, fDestPage;
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int32 fDestPage;
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BRect fDestBounds;
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void DetectLink(int start);
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void CreateLink(float llx, float lly, float urx, float ury);
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public:
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LocalLink(XRefDefs* defs, XRefDests* dests, PDFWriter* writer, BString* utf8, BFont* font, int32 page);
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LocalLink(XRefDefs* defs, XRefDests* dests, PDFWriter* writer, BString* utf8, int32 page);
|
||||
bool Link(XRefDef* def, MatchResult* result);
|
||||
bool Dest(XRefDef* def, MatchResult* result);
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user