2 * \file RenderGraphic.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Angus Leeming
8 * Full author contact details are available in file CREDITS.
13 #include "RenderGraphic.h"
15 #include "insets/Inset.h"
17 #include "support/FileName.h"
18 #include "support/filetools.h"
19 #include "support/gettext.h"
22 #include "MetricsInfo.h"
24 #include "frontends/FontMetrics.h"
25 #include "frontends/Painter.h"
27 #include "graphics/GraphicsImage.h"
29 #include "support/filetools.h"
31 #include <boost/bind.hpp>
38 RenderGraphic::RenderGraphic(Inset const * inset)
40 loader_.connect(boost::bind(&Inset::updateFrontend, inset));
44 RenderGraphic::RenderGraphic(RenderGraphic const & other, Inset const * inset)
45 : RenderBase(other), loader_(other.loader_), params_(other.params_)
47 loader_.connect(boost::bind(&Inset::updateFrontend, inset));
51 RenderBase * RenderGraphic::clone(Inset const * inset) const
53 return new RenderGraphic(*this, inset);
57 void RenderGraphic::update(graphics::Params const & params)
61 if (!params_.filename.empty())
62 loader_.reset(params_.filename, params_);
68 bool displayGraphic(graphics::Params const & params)
70 return params.display && lyxrc.display_graphics;
74 docstring const statusMessage(graphics::Params const & params,
75 graphics::ImageStatus status)
79 if (!displayGraphic(params))
80 ret = _("Not shown.");
83 case graphics::WaitingToLoad:
84 ret = _("Not shown.");
86 case graphics::Loading:
87 ret = _("Loading...");
89 case graphics::Converting:
90 ret = _("Converting to loadable format...");
92 case graphics::Loaded:
93 ret = _("Loaded into memory. Generating pixmap...");
95 case graphics::ScalingEtc:
96 ret = _("Scaling etc...");
99 ret = _("Ready to display");
101 case graphics::ErrorNoFile:
102 ret = _("No file found!");
104 case graphics::ErrorConverting:
105 ret = _("Error converting to loadable format");
107 case graphics::ErrorLoading:
108 ret = _("Error loading file into memory");
110 case graphics::ErrorGeneratingPixmap:
111 ret = _("Error generating the pixmap");
113 case graphics::ErrorUnknown:
123 bool readyToDisplay(graphics::Loader const & loader)
125 if (!loader.image() || loader.status() != graphics::Ready)
127 return loader.image()->isDrawable();
133 void RenderGraphic::metrics(MetricsInfo & mi, Dimension & dim) const
135 if (displayGraphic(params_)) {
136 if (loader_.status() == graphics::WaitingToLoad)
137 loader_.startLoading();
138 if (!loader_.monitoring())
139 loader_.startMonitoring();
142 bool image_ready = displayGraphic(params_) && readyToDisplay(loader_);
144 dim.wid = loader_.image()->width() + 2 * Inset::TEXT_TO_INSET_OFFSET;
145 dim.asc = loader_.image()->height();
150 dim.asc = image_ready ? loader_.image()->height() : 50;
155 FontInfo msgFont(mi.base.font);
156 msgFont.setFamily(SANS_FAMILY);
159 docstring const justname = from_utf8(params_.filename.onlyFileName());
160 if (!justname.empty()) {
161 msgFont.setSize(FONT_SIZE_FOOTNOTE);
162 font_width = theFontMetrics(msgFont).width(justname);
165 docstring const msg = statusMessage(params_, loader_.status());
167 msgFont.setSize(FONT_SIZE_TINY);
168 font_width = max(font_width,
169 theFontMetrics(msgFont).width(msg));
172 dim.wid = max(50, font_width + 15);
178 void RenderGraphic::draw(PainterInfo & pi, int x, int y) const
180 // This will draw the graphics. If the graphics has not been
181 // loaded yet, we draw just a rectangle.
183 if (displayGraphic(params_) && readyToDisplay(loader_)) {
184 pi.pain.image(x + Inset::TEXT_TO_INSET_OFFSET,
186 dim_.wid - 2 * Inset::TEXT_TO_INSET_OFFSET,
191 pi.pain.rectangle(x + Inset::TEXT_TO_INSET_OFFSET,
193 dim_.wid - 2 * Inset::TEXT_TO_INSET_OFFSET,
197 // Print the file name.
198 FontInfo msgFont = pi.base.font;
199 msgFont.setFamily(SANS_FAMILY);
200 string const justname = params_.filename.onlyFileName();
202 if (!justname.empty()) {
203 msgFont.setSize(FONT_SIZE_FOOTNOTE);
204 pi.pain.text(x + Inset::TEXT_TO_INSET_OFFSET + 6,
205 y - theFontMetrics(msgFont).maxAscent() - 4,
206 from_utf8(justname), msgFont);
209 // Print the message.
210 docstring const msg = statusMessage(params_, loader_.status());
212 msgFont.setSize(FONT_SIZE_TINY);
213 pi.pain.text(x + Inset::TEXT_TO_INSET_OFFSET + 6,
214 y - 4, msg, msgFont);