gui: the preview is as big as you drag it, and PDFs render to suit

1 files changed, 12 insertions, 1 deletions

diff --git a/gui/internal/model/prefs.go b/gui/internal/model/prefs.go
index ce9ee42..52ed012 100644
--- a/gui/internal/model/prefs.go
+++ b/gui/internal/model/prefs.go
@@ -22,11 +22,19 @@ type Prefs struct {
 	Preview bool `json:"preview"`
 	// SelectAll starts a plan's rows checked, as the terminal review does.
 	SelectAll bool `json:"select_all"`
+	// PreviewHeight is how tall the preview under the explanation is, in
+	// pixels; the divider between them sets it, and so does Settings.
+	PreviewHeight int `json:"preview_height"`
 }
 
+// DefaultPreviewHeight is the preview's height until one is chosen, and the
+// floor a smaller one is raised to.
+const DefaultPreviewHeight = 280
+
 // DefaultPrefs is what a window does before anything is chosen.
 func DefaultPrefs() Prefs {
-	return Prefs{FontSize: 0, Colours: true, Preview: true, SelectAll: true}
+	return Prefs{FontSize: 0, Colours: true, Preview: true, SelectAll: true,
+		PreviewHeight: DefaultPreviewHeight}
 }
 
 // PrefsFile is where they are kept.
@@ -45,6 +53,9 @@ func LoadPrefs() Prefs {
 	if err := json.Unmarshal(data, &p); err != nil {
 		return DefaultPrefs()
 	}
+	if p.PreviewHeight < 80 {
+		p.PreviewHeight = DefaultPreviewHeight
+	}
 	return p
 }