From 78005ad417dde6dddab40efacb757b1d6b0c03d0 Mon Sep 17 00:00:00 2001
From: Tavmjong Bah <tavmjong@free.fr>
Date: Sat, 5 Dec 2015 15:40:56 +0100
Subject: Handle units in the 'x', 'y', 'dx', and 'dy' text and tspan
 attributes.

Fixed bugs:
  - https://launchpad.net/bugs/1522478
  - https://launchpad.net/bugs/262528
  - https://launchpad.net/bugs/168845

(bzr r14505)
---
 src/sp-tspan.cpp | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

(limited to 'src/sp-tspan.cpp')

diff --git a/src/sp-tspan.cpp b/src/sp-tspan.cpp
index 7582cb9e6..05f8430ba 100644
--- a/src/sp-tspan.cpp
+++ b/src/sp-tspan.cpp
@@ -70,7 +70,7 @@ void SPTSpan::release() {
 }
 
 void SPTSpan::set(unsigned int key, const gchar* value) {
-    if (this->attributes.readSingleAttribute(key, value)) {
+    if (this->attributes.readSingleAttribute(key, value, style, &viewport)) {
         this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
     } else {
         switch (key) {
@@ -103,6 +103,20 @@ void SPTSpan::update(SPCtx *ctx, guint flags) {
     }
 
     SPItem::update(ctx, flags);
+
+    if (flags & ( SP_OBJECT_STYLE_MODIFIED_FLAG |
+                  SP_OBJECT_CHILD_MODIFIED_FLAG |
+                  SP_TEXT_LAYOUT_MODIFIED_FLAG   ) )
+    {
+        SPItemCtx const *ictx = reinterpret_cast<SPItemCtx const *>(ctx);
+
+        double const w = ictx->viewport.width();
+        double const h = ictx->viewport.height();
+        double const em = style->font_size.computed;
+        double const ex = 0.5 * em;  // fixme: get x height from pango or libnrtype.
+
+        attributes.update( em, ex, w, h );
+    }
 }
 
 void SPTSpan::modified(unsigned int flags) {
@@ -264,7 +278,7 @@ void SPTextPath::release() {
 }
 
 void SPTextPath::set(unsigned int key, const gchar* value) {
-    if (this->attributes.readSingleAttribute(key, value)) {
+    if (this->attributes.readSingleAttribute(key, value, style, &viewport)) {
         this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
     } else {
         switch (key) {
@@ -304,6 +318,20 @@ void SPTextPath::update(SPCtx *ctx, guint flags) {
             ochild->updateDisplay(ctx, flags);
         }
     }
+
+    if (flags & ( SP_OBJECT_STYLE_MODIFIED_FLAG |
+                  SP_OBJECT_CHILD_MODIFIED_FLAG |
+                  SP_TEXT_LAYOUT_MODIFIED_FLAG   ) )
+    {
+        SPItemCtx const *ictx = reinterpret_cast<SPItemCtx const *>(ctx);
+
+        double const w = ictx->viewport.width();
+        double const h = ictx->viewport.height();
+        double const em = style->font_size.computed;
+        double const ex = 0.5 * em;  // fixme: get x height from pango or libnrtype.
+
+        attributes.update( em, ex, w, h );
+    }
 }
 
 
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