PdfSearchModel: be QALM and find search results on all pages

It's a QAbstractListModel, so now PdfMultiPageView has a ListView in a
left-side Drawer showing all results found so far.

- In PdfMultiPageView, multiple pages exist at once, so it makes sense
  to use the same searchmodel for all.
- It's faster and saves memory.
- Search results on each page can be cached.
- It's possible to show search results in a ListView or QListView.

Change-Id: I66fba6975954a09a4d23262be87ff8cc25ee7478
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

2 files changed, 21 insertions, 0 deletions

diff --git a/examples/pdf/pdfviewer/resources/go-down-search.svg b/examples/pdf/pdfviewer/resources/go-down-search.svg
new file mode 100644
index 000000000..ae17ab93b
--- /dev/null
+++ b/examples/pdf/pdfviewer/resources/go-down-search.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#232629;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+     d="M 4.7070312 8 L 4 8.7070312 L 10.125 14.832031 L 12 16.707031 L 13.875 14.832031 L 20 8.7070312 L 19.292969 8 L 13.167969 14.125 L 12 15.292969 L 10.832031 14.125 L 4.7070312 8 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/examples/pdf/pdfviewer/resources/go-up-search.svg b/examples/pdf/pdfviewer/resources/go-up-search.svg
new file mode 100644
index 000000000..5cc155873
--- /dev/null
+++ b/examples/pdf/pdfviewer/resources/go-up-search.svg
@@ -0,0 +1,8 @@
+<svg height="24" width="24" xmlns="http://www.w3.org/2000/svg">
+    <style type="text/css" id="current-color-scheme">
+        .ColorScheme-Text {
+            color:#232629;
+        }
+    </style>
+    <path d="M4.707 16L4 15.293l8-8 8 8-.707.707L12 8.707" class="ColorScheme-Text" fill="currentColor"/>
+</svg>