make arrow button's arrow size scalable by the user

6 files changed, 41 insertions, 12 deletions

diff --git a/src/ArrowButton.cc b/src/ArrowButton.cc
index c62df2a..724562f 100644
--- a/src/ArrowButton.cc
+++ b/src/ArrowButton.cc
@@ -19,9 +19,10 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
-// $Id: ArrowButton.cc,v 1.7 2004/08/25 17:16:40 rathnor Exp $
+// $Id: ArrowButton.cc,v 1.8 2004/08/26 15:09:33 rathnor Exp $
 
 #include "ArrowButton.hh"
+#include "ButtonTheme.hh"
 
 ArrowButton::ArrowButton(ArrowButton::Type arrow_type,
                          const FbTk::FbWindow &parent,
@@ -29,7 +30,8 @@ ArrowButton::ArrowButton(ArrowButton::Type arrow_type,
                          unsigned int width, unsigned int height):
     FbTk::Button(parent, x, y, width, height),
     m_arrow_type(arrow_type),
-    m_mouse_handler(0) {
+    m_mouse_handler(0),
+    m_arrowscale(300) {
 
     setEventMask(ExposureMask | ButtonPressMask | ButtonReleaseMask |
                  EnterWindowMask | LeaveWindowMask);
@@ -41,7 +43,8 @@ ArrowButton::ArrowButton(ArrowButton::Type arrow_type,
                          unsigned int width, unsigned int height):
     FbTk::Button(screen_num, x, y, width, height),
     m_arrow_type(arrow_type),
-    m_mouse_handler(0) {
+    m_mouse_handler(0),
+    m_arrowscale(300) {
 
     setEventMask(ExposureMask | ButtonPressMask | ButtonReleaseMask |
                  EnterWindowMask | LeaveWindowMask);
@@ -84,15 +87,20 @@ void ArrowButton::drawArrow() {
     XPoint pts[3];
     unsigned int w = width();
     unsigned int h = height();
-    // arrow size: half of the button
-    unsigned int ax = w / 2;
-    unsigned int ay = h / 2;
+
+    int arrowscale_n = m_arrowscale;
+    int arrowscale_d = 100;
+    unsigned int ax = arrowscale_d * w / arrowscale_n;
+    unsigned int ay = arrowscale_d * h / arrowscale_n;
+    // if these aren't an even number, left and right arrows end up different
+    if (( ax % 2 ) == 1) ax++;
+    if (( ay % 2 ) == 1) ay++;
     switch (m_arrow_type) {
     case LEFT:
                 // start at the tip
         pts[0].x = (w / 2) - (ax / 2); pts[0].y = h / 2;
-        pts[1].x = ax; pts[1].y = ay / 2;
-        pts[2].x = 0; pts[2].y = - ay;
+        pts[1].x = ax; pts[1].y = -ay / 2;
+        pts[2].x = 0; pts[2].y = ay;
         break;
     case RIGHT:
         pts[0].x = (w / 2) + (ax / 2); pts[0].y = h / 2;
@@ -118,3 +126,12 @@ void ArrowButton::drawArrow() {
     }
 }
 
+void ArrowButton::updateTheme(const FbTk::Theme &theme) {
+    // it must be a button theme
+    const ButtonTheme &btheme = static_cast<const ButtonTheme &>(theme);
+
+    m_arrowscale = btheme.scale();
+    if (m_arrowscale == 0) m_arrowscale = 300; // default is 0 => 300
+    else if (m_arrowscale < 100) m_arrowscale = 100; // otherwise clamp
+    else if (m_arrowscale > 100000) m_arrowscale = 100000; // clamp below overflow when *100
+}
diff --git a/src/ArrowButton.hh b/src/ArrowButton.hh
index 6a74a30..ccd0346 100644
--- a/src/ArrowButton.hh
+++ b/src/ArrowButton.hh
@@ -19,7 +19,7 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
-// $Id: ArrowButton.hh,v 1.4 2003/10/13 23:51:04 fluxgen Exp $
+// $Id: ArrowButton.hh,v 1.5 2004/08/26 15:09:33 rathnor Exp $
 
 #ifndef ARROWBUTTON_HH
 #define ARROWBUTTON_HH
@@ -45,10 +45,13 @@ public:
     void leaveNotifyEvent(XCrossingEvent &ce);
 
     void setMouseMotionHandler(FbTk::EventHandler *eh) { m_mouse_handler = eh; }
+
+    void updateTheme(const FbTk::Theme &theme);
 private:
     void drawArrow();
     Type m_arrow_type;
     FbTk::EventHandler *m_mouse_handler;
+    int m_arrowscale;
 };
 
 #endif // ARROWBUTTON_HH
diff --git a/src/ButtonTheme.cc b/src/ButtonTheme.cc
index 663da77..abd8c24 100644
--- a/src/ButtonTheme.cc
+++ b/src/ButtonTheme.cc
@@ -8,7 +8,8 @@ ButtonTheme::ButtonTheme(int screen_num,
     ToolTheme(screen_num, name, alt_name),
     m_pic_color(*this, name + ".picColor", alt_name + ".PicColor"),
     m_pressed_texture(*this, name + ".pressed", alt_name + ".Pressed"),
-    m_gc(RootWindow(FbTk::App::instance()->display(), screen_num)) {
+    m_gc(RootWindow(FbTk::App::instance()->display(), screen_num)),
+    m_scale(*this, name + ".scale", alt_name + ".Scale") {
 
 }
 
diff --git a/src/ButtonTheme.hh b/src/ButtonTheme.hh
index 2636960..0df252c 100644
--- a/src/ButtonTheme.hh
+++ b/src/ButtonTheme.hh
@@ -16,10 +16,12 @@ public:
 
     inline const FbTk::Texture &pressed() const { return *m_pressed_texture; }
     inline GC gc() const { return m_gc.gc(); }
+    inline int scale() const { return *m_scale; } // scale factor for inside objects
 private:
     FbTk::ThemeItem<FbTk::Color> m_pic_color;
     FbTk::ThemeItem<FbTk::Texture> m_pressed_texture;    
     FbTk::GContext m_gc;
+    FbTk::ThemeItem<int> m_scale;
 };
 
 #endif // BUTTONTHEME_HH
diff --git a/src/ButtonTool.cc b/src/ButtonTool.cc
index a3b4d7b..78edbe7 100644
--- a/src/ButtonTool.cc
+++ b/src/ButtonTool.cc
@@ -19,7 +19,7 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
-// $Id: ButtonTool.cc,v 1.3 2004/01/13 14:41:32 rathnor Exp $
+// $Id: ButtonTool.cc,v 1.4 2004/08/26 15:09:33 rathnor Exp $
 
 #include "ButtonTool.hh"
 
@@ -55,6 +55,7 @@ void ButtonTool::renderTheme() {
     btn.setBorderColor(theme().border().color());
     btn.setBorderWidth(theme().border().width());
     btn.setAlpha(theme().alpha());
+    btn.updateTheme(static_cast<const FbTk::Theme &>(theme()));
 
     Pixmap old_pm = m_cache_pm;
     if (!theme().texture().usePixmap()) {
diff --git a/src/FbTk/Button.hh b/src/FbTk/Button.hh
index 9df0bcd..791de24 100644
--- a/src/FbTk/Button.hh
+++ b/src/FbTk/Button.hh
@@ -19,7 +19,7 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
-// $Id: Button.hh,v 1.8 2003/12/16 17:06:49 fluxgen Exp $
+// $Id: Button.hh,v 1.9 2004/08/26 15:09:33 rathnor Exp $
 
 #ifndef FBTK_BUTTON_HH
 #define FBTK_BUTTON_HH
@@ -36,6 +36,8 @@
 
 namespace FbTk {
 
+class Theme;
+
 class Button:public FbTk::FbWindow, public EventHandler, 
              private NotCopyable {
 public:
@@ -67,6 +69,9 @@ public:
     virtual void exposeEvent(XExposeEvent &event);
     //@}
 
+    // in case it cares about a theme
+    virtual void updateTheme(const FbTk::Theme &theme) {}
+
     /// @return true if the button is pressed, else false
     bool pressed() const { return m_pressed; }