From e312688492eabdd9d4af9c6feadf3b1411f1541d Mon Sep 17 00:00:00 2001
From: Tavmjong Bah <tavmjong@free.fr>
Date: Wed, 11 Mar 2015 15:01:37 +0100
Subject: Allow changing document scale (via changing viewBox). Start of GUI.

(bzr r13994)
---
 src/document.cpp | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

(limited to 'src/document.cpp')

diff --git a/src/document.cpp b/src/document.cpp
index 2a50d00bd..62e2f5b46 100644
--- a/src/document.cpp
+++ b/src/document.cpp
@@ -611,7 +611,25 @@ Inkscape::Util::Unit const& SPDocument::getSVGUnit() const
     return nv ? nv->getSVGUnit() : *unit_table.getUnit("px");
 }
 
-/// Returns document scale as defined by width/height and viewBox (real world to user-units).
+/// Sets document scale (by changing viewBox)
+void SPDocument::setDocumentScale( double scaleX, double scaleY ) {
+
+    root->viewBox = Geom::Rect::from_xywh(
+        root->viewBox.left(),
+        root->viewBox.top(),
+        root->width.computed  * scaleX,
+        root->height.computed * scaleY );
+    root->viewBox_set = true;
+    root->updateRepr();
+}
+
+/// Sets document scale (by changing viewBox, x and y scaling equal) 
+void SPDocument::setDocumentScale( double scale ) {
+    setDocumentScale( scale, scale );
+}
+
+/// Returns document scale as defined by width/height (in pixels) and viewBox (real world to
+/// user-units).
 Geom::Scale SPDocument::getDocumentScale() const
 {
     Geom::Scale scale;
@@ -660,10 +678,12 @@ void SPDocument::setWidthAndHeight(const Inkscape::Util::Quantity &width, const
     root->height.value = height.quantity;
     root->height.unit = (SVGLength::Unit) height.unit->svgUnit();
 
-    if (root->viewBox_set && changeSize)
+    // viewBox scaled by relative change in page size (maintains document scale).
+    if (root->viewBox_set && changeSize) {
         root->viewBox.setMax(Geom::Point(
         root->viewBox.left() + (root->width.value /  old_width_converted ) * root->viewBox.width(),
         root->viewBox.top()  + (root->height.value / old_height_converted) * root->viewBox.height()));
+    }
     root->updateRepr();
 }
 
-- 
cgit v1.2.3


From 034b578ef602f2095374800a8c967b1b6e5c21dd Mon Sep 17 00:00:00 2001
From: Tavmjong Bah <tavmjong@free.fr>
Date: Sat, 21 Mar 2015 12:41:01 +0100
Subject: Add GUI for 'viewBox'.

(bzr r14022)
---
 src/document.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src/document.cpp')

diff --git a/src/document.cpp b/src/document.cpp
index 62e2f5b46..1c6bb76de 100644
--- a/src/document.cpp
+++ b/src/document.cpp
@@ -764,6 +764,17 @@ void SPDocument::setHeight(const Inkscape::Util::Quantity &height, bool changeSi
     root->updateRepr();
 }
 
+Geom::Rect SPDocument::getViewBox() const
+{
+    Geom::Rect viewBox;
+    if (root->viewBox_set) {
+        viewBox = root->viewBox;
+    } else {
+        viewBox = Geom::Rect::from_xywh( 0, 0, getWidth().value("px"), getHeight().value("px"));
+    }
+    return viewBox;
+}
+
 void SPDocument::setViewBox(const Geom::Rect &viewBox)
 {
     root->viewBox_set = true;
-- 
cgit v1.2.3