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-rw-r--r--src/viewbox.cpp277
1 files changed, 0 insertions, 277 deletions
diff --git a/src/viewbox.cpp b/src/viewbox.cpp
deleted file mode 100644
index 1b50fe71c..000000000
--- a/src/viewbox.cpp
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * viewBox helper class, common code used by root, symbol, marker, pattern, image, view
- *
- * Authors:
- * Lauris Kaplinski <lauris@kaplinski.com> (code extracted from symbol.cpp)
- * Tavmjong Bah <tavmjong@free.fr>
- * Johan Engelen
- *
- * Copyright (C) 2013-2014 Tavmjong Bah, authors
- *
- * Released under GNU GPL, read the file 'COPYING' for more information
- *
- */
-
-#include <2geom/transforms.h>
-
-#include "viewbox.h"
-#include "enums.h"
-#include "sp-item.h"
-
-SPViewBox::SPViewBox()
- : viewBox_set(false)
- , viewBox()
- , aspect_set(false)
- , aspect_align(SP_ASPECT_XMID_YMID) // Default per spec
- , aspect_clip(SP_ASPECT_MEET)
- , c2p(Geom::identity())
-{
-}
-
-void SPViewBox::set_viewBox(const gchar* value) {
-
- if (value) {
- gchar *eptr = const_cast<gchar*>(value); // const-cast necessary because of const-incorrect interface definition of g_ascii_strtod
-
- double x = g_ascii_strtod (eptr, &eptr);
-
- while (*eptr && ((*eptr == ',') || (*eptr == ' '))) {
- eptr++;
- }
-
- double y = g_ascii_strtod (eptr, &eptr);
-
- while (*eptr && ((*eptr == ',') || (*eptr == ' '))) {
- eptr++;
- }
-
- double width = g_ascii_strtod (eptr, &eptr);
-
- while (*eptr && ((*eptr == ',') || (*eptr == ' '))) {
- eptr++;
- }
-
- double height = g_ascii_strtod (eptr, &eptr);
-
- while (*eptr && ((*eptr == ',') || (*eptr == ' '))) {
- eptr++;
- }
-
- if ((width > 0) && (height > 0)) {
- /* Set viewbox */
- this->viewBox = Geom::Rect::from_xywh(x, y, width, height);
- this->viewBox_set = true;
- } else {
- this->viewBox_set = false;
- }
- } else {
- this->viewBox_set = false;
- }
-
- // The C++ way? -- not necessarily using iostreams
- // std::string sv( value );
- // std::replace( sv.begin(), sv.end(), ',', ' ');
- // std::stringstream ss( sv );
- // double x, y, width, height;
- // ss >> x >> y >> width >> height;
-}
-
-void SPViewBox::set_preserveAspectRatio(const gchar* value) {
-
- /* Do setup before, so we can use break to escape */
- this->aspect_set = false;
- this->aspect_align = SP_ASPECT_XMID_YMID; // Default per spec
- this->aspect_clip = SP_ASPECT_MEET;
-
- if (value) {
- const gchar *p = value;
-
- while (*p && (*p == 32)) {
- p += 1;
- }
-
- if (!*p) {
- return;
- }
-
- const gchar *e = p;
-
- while (*e && (*e != 32)) {
- e += 1;
- }
-
- int len = e - p;
-
- if (len > 8) { // Can't have buffer overflow as 8 < 256
- return;
- }
-
- gchar c[256];
- memcpy (c, value, len);
-
- c[len] = 0;
-
- /* Now the actual part */
- unsigned int align = SP_ASPECT_NONE;
- if (!strcmp (c, "none")) {
- align = SP_ASPECT_NONE;
- } else if (!strcmp (c, "xMinYMin")) {
- align = SP_ASPECT_XMIN_YMIN;
- } else if (!strcmp (c, "xMidYMin")) {
- align = SP_ASPECT_XMID_YMIN;
- } else if (!strcmp (c, "xMaxYMin")) {
- align = SP_ASPECT_XMAX_YMIN;
- } else if (!strcmp (c, "xMinYMid")) {
- align = SP_ASPECT_XMIN_YMID;
- } else if (!strcmp (c, "xMidYMid")) {
- align = SP_ASPECT_XMID_YMID;
- } else if (!strcmp (c, "xMaxYMid")) {
- align = SP_ASPECT_XMAX_YMID;
- } else if (!strcmp (c, "xMinYMax")) {
- align = SP_ASPECT_XMIN_YMAX;
- } else if (!strcmp (c, "xMidYMax")) {
- align = SP_ASPECT_XMID_YMAX;
- } else if (!strcmp (c, "xMaxYMax")) {
- align = SP_ASPECT_XMAX_YMAX;
- } else {
- return;
- }
-
- unsigned int clip = SP_ASPECT_MEET;
-
- while (*e && (*e == 32)) {
- e += 1;
- }
-
- if (*e) {
- if (!strcmp (e, "meet")) {
- clip = SP_ASPECT_MEET;
- } else if (!strcmp (e, "slice")) {
- clip = SP_ASPECT_SLICE;
- } else {
- return;
- }
- }
-
- this->aspect_set = true;
- this->aspect_align = align;
- this->aspect_clip = clip;
- }
-}
-
-// Apply scaling from viewbox
-void SPViewBox::apply_viewbox(const Geom::Rect& in, double scale_none) {
-
- /* Determine actual viewbox in viewport coordinates */
- // scale_none is the scale that would apply if the viewbox and page size are same size
- // it is passed here because it is a double-precision variable, while 'in' is originally float
- double x = 0.0;
- double y = 0.0;
- double scale_x = in.width() / this->viewBox.width();
- double scale_y = in.height() / this->viewBox.height();
- double scale_uniform = 1.0; // used only if scaling is uniform
-
- if (Geom::are_near(scale_x / scale_y, 1.0, Geom::EPSILON)) {
- // scaling is already uniform, reduce numerical error
- scale_uniform = (scale_x + scale_y)/2.0;
- if (Geom::are_near(scale_uniform / scale_none, 1.0, Geom::EPSILON))
- scale_uniform = scale_none; // objects are same size, reduce numerical error
- scale_x = scale_uniform;
- scale_y = scale_uniform;
- } else if (this->aspect_align != SP_ASPECT_NONE) {
- // scaling is not uniform, but force it to be
- scale_uniform = (this->aspect_clip == SP_ASPECT_MEET) ? MIN (scale_x, scale_y) : MAX (scale_x, scale_y);
- scale_x = scale_uniform;
- scale_y = scale_uniform;
- double width = this->viewBox.width() * scale_uniform;
- double height = this->viewBox.height() * scale_uniform;
-
- /* Now place viewbox to requested position */
- switch (this->aspect_align) {
- case SP_ASPECT_XMIN_YMIN:
- break;
- case SP_ASPECT_XMID_YMIN:
- x = 0.5 * (in.width() - width);
- break;
- case SP_ASPECT_XMAX_YMIN:
- x = 1.0 * (in.width() - width);
- break;
- case SP_ASPECT_XMIN_YMID:
- y = 0.5 * (in.height() - height);
- break;
- case SP_ASPECT_XMID_YMID:
- x = 0.5 * (in.width() - width);
- y = 0.5 * (in.height() - height);
- break;
- case SP_ASPECT_XMAX_YMID:
- x = 1.0 * (in.width() - width);
- y = 0.5 * (in.height() - height);
- break;
- case SP_ASPECT_XMIN_YMAX:
- y = 1.0 * (in.height() - height);
- break;
- case SP_ASPECT_XMID_YMAX:
- x = 0.5 * (in.width() - width);
- y = 1.0 * (in.height() - height);
- break;
- case SP_ASPECT_XMAX_YMAX:
- x = 1.0 * (in.width() - width);
- y = 1.0 * (in.height() - height);
- break;
- default:
- break;
- }
- }
-
- /* Viewbox transform from scale and position */
- Geom::Affine q;
- q[0] = scale_x;
- q[1] = 0.0;
- q[2] = 0.0;
- q[3] = scale_y;
- q[4] = x - scale_x * this->viewBox.left();
- q[5] = y - scale_y * this->viewBox.top();
-
- // std::cout << " q\n" << q << std::endl;
-
- /* Append viewbox transformation */
- this->c2p = q * this->c2p;
-}
-
-SPItemCtx SPViewBox::get_rctx(const SPItemCtx* ictx, double scale_none) {
-
- /* Create copy of item context */
- SPItemCtx rctx = *ictx;
-
- /* Calculate child to parent transformation */
- /* Apply parent translation (set up as viewport) */
- this->c2p = Geom::Translate(rctx.viewport.min());
-
- if (this->viewBox_set) {
- // Adjusts c2p for viewbox
- apply_viewbox( rctx.viewport, scale_none );
- }
-
- rctx.i2doc = this->c2p * rctx.i2doc;
-
- /* If viewBox is set initialize child viewport */
- /* Otherwise it is already correct */
- if (this->viewBox_set) {
- rctx.viewport = this->viewBox;
- rctx.i2vp = Geom::identity();
- }
-
- return rctx;
-}
-
-/*
- Local Variables:
- mode:c++
- c-file-style:"stroustrup"
- c-basic-offset:2
- c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
- indent-tabs-mode:nil
- fill-column:99
- End:
-*/
-// vim: filetype=cpp:expandtab:shiftwidth=2:tabstop=8:softtabstop=2:fileencoding=utf-8:textwidth=99 :
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