From f46b0b6b7b7457f526f6e61e47bbc102a6950cc9 Mon Sep 17 00:00:00 2001
From: twanvl <twanvl@0fc631ac-6414-0410-93d0-97cfa31319b6>
Date: Sun, 29 Oct 2006 16:23:31 +0000
Subject: [PATCH] Added ScriptableImage plus the beginnings of dependency stuff

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@58 0fc631ac-6414-0410-93d0-97cfa31319b6
---
 src/data/field/choice.cpp     |   2 +-
 src/data/field/choice.hpp     |   3 +-
 src/data/set.cpp              |  11 +++
 src/data/set.hpp              |  16 +++-
 src/gfx/gfx.hpp               |  21 +++--
 src/mse.vcproj                |  42 ++++++++++
 src/render/card/viewer.cpp    |   1 +
 src/render/card/viewer.hpp    |   3 +
 src/render/value/choice.cpp   |  41 +++++++++-
 src/render/value/choice.hpp   |  11 ++-
 src/render/value/color.hpp    |   2 +-
 src/render/value/viewer.hpp   |   2 +-
 src/script/image.cpp          | 141 ++++++++++++++++++++++++++++++++++
 src/script/image.hpp          |  78 +++++++++++++++++++
 src/script/script_manager.cpp |  11 +++
 src/script/script_manager.hpp |  81 +++++++++++++++++++
 src/script/value.hpp          |   1 +
 src/util/age.cpp              |  15 ++++
 src/util/age.hpp              |  56 ++++++++++++++
 src/util/alignment.hpp        |   1 +
 src/util/rotation.cpp         |   5 +-
 src/util/rotation.hpp         |   7 +-
 22 files changed, 533 insertions(+), 18 deletions(-)
 create mode 100644 src/script/image.cpp
 create mode 100644 src/script/image.hpp
 create mode 100644 src/script/script_manager.cpp
 create mode 100644 src/script/script_manager.hpp
 create mode 100644 src/util/age.cpp
 create mode 100644 src/util/age.hpp

diff --git a/src/data/field/choice.cpp b/src/data/field/choice.cpp
index 76776466..b3030503 100644
--- a/src/data/field/choice.cpp
+++ b/src/data/field/choice.cpp
@@ -179,7 +179,7 @@ IMPLEMENT_REFLECTION(ChoiceStyle) {
 	REFLECT(alignment);
 	REFLECT(colors_card_list);
 //	REFLECT(font);
-//	REFLECT(choice_images);
+	REFLECT(choice_images);
 //	if (tag.reading() && choice_colors.empty())
 	REFLECT(choice_colors);
 }
diff --git a/src/data/field/choice.hpp b/src/data/field/choice.hpp
index e54f011d..107d47c3 100644
--- a/src/data/field/choice.hpp
+++ b/src/data/field/choice.hpp
@@ -14,6 +14,7 @@
 #include <data/field.hpp>
 #include <gfx/gfx.hpp> // for ImageCombine
 #include <script/scriptable.hpp>
+#include <script/image.hpp>
 
 // ----------------------------------------------------------------------------- : ChoiceField
 
@@ -115,7 +116,7 @@ class ChoiceStyle : public Style {
 	ChoicePopupStyle			popup_style;	///< Style of popups/menus
 	ChoiceRenderStyle			render_style;	///< Style of rendering
 //	FontInfo					font;			///< Font for drawing text (when RENDER_TEXT)
-//	map<String,ScriptableImage>	choice_images;	///< Images for the various choices (when RENDER_IMAGE)
+	map<String,ScriptableImage>	choice_images;	///< Images for the various choices (when RENDER_IMAGE)
 	map<String,Color>			choice_colors;	///< Colors for the various choices (when color_cardlist)
 	bool						colors_card_list;///< Does this field determine colors of the rows in the card list?
 	String						mask_filename;	///< Filename of an additional mask over the images
diff --git a/src/data/set.cpp b/src/data/set.cpp
index 5fb2430a..e219b916 100644
--- a/src/data/set.cpp
+++ b/src/data/set.cpp
@@ -12,6 +12,7 @@
 #include <data/card.hpp>
 #include <data/field.hpp>
 #include <script/value.hpp>
+#include <script/script_manager.hpp>
 
 // ----------------------------------------------------------------------------- : Set
 
@@ -26,8 +27,18 @@ Set::Set(const StyleSheetP& stylesheet)
 	, game(stylesheet->game)
 {}
 
+Set::~Set() {}
+
+
+Context& Set::getContext() {
+	throw "TODO";
+}
+
 String Set::typeName() const { return _("set"); }
 
+void Set::validate() {
+}
+
 IMPLEMENT_REFLECTION(Set) {
 	tag.addAlias(300, _("style"), _("stylesheet")); // < 0.3.0 used style instead of stylesheet
 	REFLECT(game);
diff --git a/src/data/set.hpp b/src/data/set.hpp
index 473f047a..eff9f0eb 100644
--- a/src/data/set.hpp
+++ b/src/data/set.hpp
@@ -13,6 +13,7 @@
 #include <util/reflect.hpp>
 #include <util/action_stack.hpp>
 #include <util/io/package.hpp>
+#include <boost/scoped_ptr.hpp>
 
 DECLARE_POINTER_TYPE(Card);
 DECLARE_POINTER_TYPE(Set);
@@ -20,6 +21,8 @@ DECLARE_POINTER_TYPE(Game);
 DECLARE_POINTER_TYPE(StyleSheet);
 DECLARE_POINTER_TYPE(Field);
 DECLARE_POINTER_TYPE(Value);
+class ScriptManager;
+class Context;
 
 // ----------------------------------------------------------------------------- : Set
 
@@ -32,6 +35,7 @@ class Set : public Packaged {
 	Set(const GameP& game);
 	/// Create a set using the given stylesheet, and its game
 	Set(const StyleSheetP& stylesheet);
+	~Set();
   
 	/// The game this set uses
 	GameP game;
@@ -47,10 +51,18 @@ class Set : public Packaged {
 	/// Actions performed on this set and the cards in it
 	ActionStack actions;
 	
+	/// A context for performing scripts
+	/** Should only be used from the main thread! */
+	Context& getContext();
+	
   protected:
-	String typeName() const;
-		
+	virtual String typeName() const;
+	virtual void validate();
+	
 	DECLARE_REFLECTION();
+  private:
+	/// Object for managing and executing scripts
+	scoped_ptr<ScriptManager> script_manager;
 };
 
 
diff --git a/src/gfx/gfx.hpp b/src/gfx/gfx.hpp
index aae42d7d..92a2e02c 100644
--- a/src/gfx/gfx.hpp
+++ b/src/gfx/gfx.hpp
@@ -37,6 +37,14 @@ void resample(const Image& imgIn, Image& imgOut);
 /// that rectangle is resampledinto the entire output image
 void resample_and_clip(const Image& imgIn, Image& imgOut, wxRect rect);
 
+/// How to preserve the aspect ratio of an image when rescaling
+enum PreserveAspect
+{	ASPECT_STRETCH		///< don't preserve
+,	ASPECT_BORDER		///< put borders around the image to make it the right shape
+,	ASPECT_FIT			///< generate a smaller image if needed
+};
+
+
 // ----------------------------------------------------------------------------- : Image rotation
 
 /// Rotates an image counter clockwise
@@ -45,14 +53,12 @@ Image rotate_image(const Image& image, int angle);
 
 // ----------------------------------------------------------------------------- : Blending
 
-/// Blends two images together, using a horizontal gradient
+/// Blends two images together using some linear gradient
 /** The result is stored in img1
- *  To the left the color is that of img1, to the right of img2
+ *  The two coordinates give the two points between which the images are blended
+ *  Coordinates are given in the range [0..1);
  */
-void hblend(Image& img1, const Image& img2);
-
-/// Blends two images together, using a vertical gradient
-void vblend(Image& img1, const Image& img2);
+void linear_blend(Image& img1, const Image& img2, double x1,double y1, double x2,double y2);
 
 /// Blends two images together, using a third image as a mask
 /** The result is stored in img1
@@ -61,6 +67,9 @@ void vblend(Image& img1, const Image& img2);
  */
 void mask_blend(Image& img1, const Image& img2, const Image& mask);
 
+/// Use the red channel of img2 as alpha channel for img1
+void set_alpha(Image& img1, const Image& img2);
+
 // ----------------------------------------------------------------------------- : Combining
 
 /// Ways in which images can be combined, similair to what Photoshop supports
diff --git a/src/mse.vcproj b/src/mse.vcproj
index 5c81bd9c..823c3ef3 100644
--- a/src/mse.vcproj
+++ b/src/mse.vcproj
@@ -999,6 +999,12 @@
 				<File
 					RelativePath=".\util\action_stack.hpp">
 				</File>
+				<File
+					RelativePath=".\util\age.cpp">
+				</File>
+				<File
+					RelativePath=".\util\age.hpp">
+				</File>
 				<File
 					RelativePath=".\util\alignment.cpp">
 				</File>
@@ -1113,6 +1119,36 @@
 			<File
 				RelativePath=".\script\dependency.cpp">
 			</File>
+			<File
+				RelativePath=".\script\image.cpp">
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						ObjectFile="$(IntDir)/$(InputName)3.obj"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						ObjectFile="$(IntDir)/$(InputName)3.obj"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug Unicode|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						ObjectFile="$(IntDir)/$(InputName)3.obj"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release Unicode|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						ObjectFile="$(IntDir)/$(InputName)3.obj"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath=".\script\image.hpp">
+			</File>
 			<File
 				RelativePath=".\script\parser.cpp">
 			</File>
@@ -1125,6 +1161,12 @@
 			<File
 				RelativePath=".\script\script.hpp">
 			</File>
+			<File
+				RelativePath=".\script\script_manager.cpp">
+			</File>
+			<File
+				RelativePath=".\script\script_manager.hpp">
+			</File>
 			<File
 				RelativePath=".\script\scriptable.cpp">
 			</File>
diff --git a/src/render/card/viewer.cpp b/src/render/card/viewer.cpp
index 4342ac3d..f9ded61c 100644
--- a/src/render/card/viewer.cpp
+++ b/src/render/card/viewer.cpp
@@ -48,6 +48,7 @@ bool   DataViewer::drawBorders()   const { return false; }
 bool   DataViewer::drawEditing()   const { return false; }
 wxPen  DataViewer::borderPen(bool) const { return wxPen(); }
 ValueViewer* DataViewer::focusedViewer() const { return nullptr; }
+Context& DataViewer::getContext()  const { return set->getContext(); }
 
 // ----------------------------------------------------------------------------- : Setting data
 
diff --git a/src/render/card/viewer.hpp b/src/render/card/viewer.hpp
index f87e56d9..eebc9f70 100644
--- a/src/render/card/viewer.hpp
+++ b/src/render/card/viewer.hpp
@@ -15,6 +15,7 @@
 
 DECLARE_POINTER_TYPE(Style);
 DECLARE_POINTER_TYPE(ValueViewer);
+class Context;
 
 // ----------------------------------------------------------------------------- : DataViewer
 
@@ -47,6 +48,8 @@ class DataViewer : public SetView {
 	/// The viewer that is currently focused, may be null
 	/** null by default, can be overloaded */
 	virtual ValueViewer* focusedViewer() const;
+	/// Get a script context to use for scripts in the viewers
+	Context& getContext() const;
 	
 	// --------------------------------------------------- : Setting data
 	
diff --git a/src/render/value/choice.cpp b/src/render/value/choice.cpp
index 7fd92a59..a90b6acf 100644
--- a/src/render/value/choice.cpp
+++ b/src/render/value/choice.cpp
@@ -7,5 +7,44 @@
 // ----------------------------------------------------------------------------- : Includes
 
 #include <render/value/choice.hpp>
+#include <render/card/viewer.hpp>
 
-// ----------------------------------------------------------------------------- : 
+// ----------------------------------------------------------------------------- : ChoiceValueViewer
+
+void ChoiceValueViewer::draw(RotatedDC& dc) {
+	drawFieldBorder(dc);
+	if (value().value().empty()) return;
+	double margin = 0;
+	if (style().render_style & RENDER_IMAGE) {
+		// draw image
+		map<String,ScriptableImage>::iterator it = style().choice_images.find(value().value());
+		if (it != style().choice_images.end()) {
+			ScriptableImage& img = it->second;
+			ScriptImageP i;
+			if (nativeLook()) {
+				i = img.update(viewer.getContext(), 16, 16, ASPECT_BORDER, false);
+			} else if(style().render_style & RENDER_TEXT) {
+				// also drawing text
+				i = img.update(viewer.getContext(), 0, 0);
+			} else {
+				i = img.update(viewer.getContext(),
+						dc.trS(style().width), dc.trS(style().height),
+						style().alignment == ALIGN_STRETCH ? ASPECT_STRETCH : ASPECT_FIT
+					);
+			}
+			if (i) {
+				dc.DrawImage(i->image,
+					align_in_rect(style().alignment, RealSize(i->image.GetWidth(), i->image.GetHeight()), style().getRect()),
+					i->combine == COMBINE_NORMAL ? style().combine : i->combine
+				);
+				margin = i->image.GetWidth() + 1;
+			}
+		}
+	}
+	if (style().render_style & RENDER_TEXT) {
+		// draw text
+		dc.DrawText(capitalize(value().value()),
+			align_in_rect(ALIGN_MIDDLE_LEFT, RealSize(0, dc.GetCharHeight()), style().getRect()) + RealSize(margin, 0)
+		);
+	}
+}
\ No newline at end of file
diff --git a/src/render/value/choice.hpp b/src/render/value/choice.hpp
index ddf726b0..8c71b9c9 100644
--- a/src/render/value/choice.hpp
+++ b/src/render/value/choice.hpp
@@ -10,9 +10,18 @@
 // ----------------------------------------------------------------------------- : Includes
 
 #include <util/prec.hpp>
+#include <render/value/viewer.hpp>
+#include <data/field/choice.hpp>
 
-// ----------------------------------------------------------------------------- : 
+// ----------------------------------------------------------------------------- : ChoiceValueViewer
 
+/// Viewer that displays a choice value
+class ChoiceValueViewer : public ValueViewer {
+  public:
+	DECLARE_VALUE_VIEWER(Choice) : ValueViewer(parent,style) {}
+	
+	virtual void draw(RotatedDC& dc);
+};
 
 // ----------------------------------------------------------------------------- : EOF
 #endif
diff --git a/src/render/value/color.hpp b/src/render/value/color.hpp
index 2c7c6bbf..57ce7533 100644
--- a/src/render/value/color.hpp
+++ b/src/render/value/color.hpp
@@ -15,7 +15,7 @@
 
 // ----------------------------------------------------------------------------- : ColorValueViewer
 
-/// Viewer that displays an color value
+/// Viewer that displays a color value
 class ColorValueViewer : public ValueViewer {
   public:
 	DECLARE_VALUE_VIEWER(Color) : ValueViewer(parent,style) {}
diff --git a/src/render/value/viewer.hpp b/src/render/value/viewer.hpp
index fdba2fe7..e00f73c8 100644
--- a/src/render/value/viewer.hpp
+++ b/src/render/value/viewer.hpp
@@ -76,7 +76,7 @@ class ValueViewer {
 
 #define DECLARE_VALUE_VIEWER(Type)																	\
   private:																							\
-	inline const Type##Style& style() const { return static_cast<const Type##Style&>(*styleP); }	\
+	inline       Type##Style& style() const { return static_cast<      Type##Style&>(*styleP); }	\
 	inline const Type##Value& value() const { return static_cast<const Type##Value&>(*valueP); }	\
 	inline const Type##Field& field() const { return style().field(); }								\
   public:																							\
diff --git a/src/script/image.cpp b/src/script/image.cpp
new file mode 100644
index 00000000..5d08f647
--- /dev/null
+++ b/src/script/image.cpp
@@ -0,0 +1,141 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <script/image.hpp>
+#include <script/context.hpp>
+#include <util/dynamic_arg.hpp>
+#include <util/io/package.hpp>
+
+// image generating functions have two modes
+// if last_update_age >  0 they return whether the image is still up to date
+// if last_update_age == 0 they generate the image
+DECLARE_DYNAMIC_ARG  (long, last_update_age);
+IMPLEMENT_DYNAMIC_ARG(long, last_update_age, 0);
+IMPLEMENT_DYNAMIC_ARG(Package*, load_images_from, nullptr);
+
+// ----------------------------------------------------------------------------- : ScriptImage
+
+ScriptType ScriptImage::type() const { return SCRIPT_IMAGE; }
+String ScriptImage::typeName() const { return _("image"); }
+
+// ----------------------------------------------------------------------------- : Utility
+
+/// Convert a script value to an image
+ScriptImageP to_script_image(const ScriptValueP& value) {
+	if (ScriptImageP img = dynamic_pointer_cast<ScriptImage>(value)) {
+		return img; // already an image
+	} else if (value->type() == SCRIPT_STRING) {
+		// open a file
+		String filename = *value;
+		Package* pkg = load_images_from();
+		if (!pkg) throw ScriptError(_("Can only load images in a context where an image is expected"));
+		InputStreamP file = pkg->openIn(filename);
+		ScriptImageP img = new_intrusive<ScriptImage>();
+		if (img->image.LoadFile(*file)) {
+			if (img->image.HasMask()) img->image.InitAlpha(); // we can't handle masks
+			return img;
+		} else {
+			throw ScriptError(_("Unable to load image '") + filename + _("' from '" + pkg->name() + _("'")));
+		}
+	} else {
+		throw ScriptError(_("Can not convert from '") + value->typeName() + _("' to image"));
+	}
+}
+
+/// Is the given image up to date?
+bool script_image_up_to_date(const ScriptValueP& value) {
+	if (value->type() == SCRIPT_INT) {
+		return (int)*value; // boolean up-to-dateness from parameter
+	} else {
+		return true;
+	}
+}
+
+// ----------------------------------------------------------------------------- : ScriptableImage
+
+ScriptImageP ScriptableImage::update(Context& ctx, UInt width, UInt height, PreserveAspect preserve_aspect, bool saturate) {
+	// up to date?
+	if (!cache || (UInt)cache->image.GetWidth() != width || (UInt)cache->image.GetHeight() == height) {
+		// cache must be updated
+		cache = generate(ctx, width, height, preserve_aspect, saturate);
+		last_update.update();
+	}
+	return cache;
+}
+
+
+// ----------------------------------------------------------------------------- : Reflection
+
+// we need some custom io, because the behaviour is different for each of Reader/Writer/GetMember
+
+template <> void Reader::handle(ScriptableImage& s) {
+	handle(s.script.unparsed);
+	if (starts_with(s.script.unparsed, _("script:"))) {
+		s.script.unparsed = s.script.unparsed.substr(7);
+		s.script.parse(*this);
+	} else {
+		// script is a constant function
+		s.script.script = new_intrusive<Script>();
+		s.script.script->addInstruction(I_PUSH_CONST, s.script.unparsed);
+	}
+}
+template <> void Writer::handle(const ScriptableImage& s) {
+	handle(s.script.unparsed);
+}
+template <> void GetDefaultMember::handle(const ScriptableImage& s) {
+	handle(s.script.unparsed);
+}
+
+
+// ----------------------------------------------------------------------------- : Functions
+
+SCRIPT_FUNCTION(linear_blend) {
+	if (last_update_age() == 0) {
+		ScriptImageP image1 = to_script_image(ctx.getVariable(_("image1")));
+		ScriptImageP image2 = to_script_image(ctx.getVariable(_("image2")));
+		SCRIPT_PARAM(double, x1); SCRIPT_PARAM(double, y1);
+		SCRIPT_PARAM(double, x2); SCRIPT_PARAM(double, y2);
+		linear_blend(image1->image, image2->image, x1, y1, x2, y2);
+		return image1;
+	} else {
+		SCRIPT_RETURN(
+			script_image_up_to_date(ctx.getVariable(_("image1"))) &&
+			script_image_up_to_date(ctx.getVariable(_("image2")))
+		);
+	}
+}
+
+SCRIPT_FUNCTION(masked_blend) {
+	if (last_update_age() == 0) {
+		ScriptImageP light = to_script_image(ctx.getVariable(_("light")));
+		ScriptImageP dark  = to_script_image(ctx.getVariable(_("dark")));
+		ScriptImageP mask  = to_script_image(ctx.getVariable(_("mask")));
+		mask_blend(light->image, dark->image, mask->image);
+		return light;
+	} else {
+		SCRIPT_RETURN(
+			script_image_up_to_date(ctx.getVariable(_("light"))) &&
+			script_image_up_to_date(ctx.getVariable(_("dark" ))) &&
+			script_image_up_to_date(ctx.getVariable(_("mask" )))
+		);
+	}
+}
+
+SCRIPT_FUNCTION(set_mask) {
+	if (last_update_age() == 0) {
+		ScriptImageP image = to_script_image(ctx.getVariable(_("image")));
+		ScriptImageP mask  = to_script_image(ctx.getVariable(_("mask")));
+		set_alpha(image->image, mask->image);
+		return image;
+	} else {
+		SCRIPT_RETURN(
+			script_image_up_to_date(ctx.getVariable(_("image"))) &&
+			script_image_up_to_date(ctx.getVariable(_("mask")))
+		);
+	}
+}
diff --git a/src/script/image.hpp b/src/script/image.hpp
new file mode 100644
index 00000000..cd636466
--- /dev/null
+++ b/src/script/image.hpp
@@ -0,0 +1,78 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+#ifndef HEADER_SCRIPT_IMAGE
+#define HEADER_SCRIPT_IMAGE
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+#include <util/age.hpp>
+#include <script/scriptable.hpp>
+#include <gfx/gfx.hpp>
+#include <util/dynamic_arg.hpp>
+
+class Package;
+DECLARE_INTRUSIVE_POINTER_TYPE(ScriptImage);
+
+// ----------------------------------------------------------------------------- : ScriptableImage
+
+DECLARE_DYNAMIC_ARG(Package*, load_images_from);
+
+/// An image, returned by a script function
+class ScriptImage : public ScriptValue {
+  public:
+	inline ScriptImage() : combine(COMBINE_NORMAL) {}
+	inline ScriptImage(const Image& image, ImageCombine combine = COMBINE_NORMAL)
+		: image(image), combine(combine)
+	{}
+	
+	Image        image;   ///< The image
+	ImageCombine combine; ///< How to combine the image with the background
+	
+	virtual ScriptType type() const;
+	virtual String typeName() const;
+};
+
+
+/// An image that can also be scripted
+/** Differs from Scriptable<Image> in that:
+ *   - A script is always used
+ *   - Age is checked, chached images are used if possible
+ *   - The image can be scaled
+ */
+class ScriptableImage {
+  public:
+	/// Is there an image set?
+	inline operator bool() const { return script; }
+	
+	/// Generate an image, doesn't cache, and doesn't scale
+	ScriptImageP generate(Context& ctx) const;
+	/// Generate an image, scaling it and optionally saturating it
+	ScriptImageP generate(Context& ctx, UInt width, UInt height, PreserveAspect preserve_aspect = ASPECT_STRETCH, bool saturate = false) const;
+	
+	/// Update and return the cached image
+	/** Only recomputes the image if it is out of date, or the size doesn't match.
+	 *  If width==height==0 then doesn't resample.
+	 */
+	ScriptImageP update(Context& ctx, UInt width = 0, UInt height = 0, PreserveAspect preserve_aspect = ASPECT_STRETCH, bool saturate = false);
+	
+	/// Is the cached image up to date?
+	bool upToDate(Context& ctx, Age age) const;
+	
+  private:
+	OptionalScript script;		///< The script, not really optional
+	ScriptImageP   cache;		///< The cached image
+	Age            last_update;	///< Age of last image update of the cached image
+	
+	DECLARE_REFLECTION();
+};
+
+/// Missing for now
+inline ScriptValueP toScript(const ScriptableImage&) { return script_nil; }
+
+// ----------------------------------------------------------------------------- : EOF
+#endif
diff --git a/src/script/script_manager.cpp b/src/script/script_manager.cpp
new file mode 100644
index 00000000..e26fa436
--- /dev/null
+++ b/src/script/script_manager.cpp
@@ -0,0 +1,11 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <script/script_manager.hpp>
+
+// ----------------------------------------------------------------------------- : 
diff --git a/src/script/script_manager.hpp b/src/script/script_manager.hpp
new file mode 100644
index 00000000..7be1d2de
--- /dev/null
+++ b/src/script/script_manager.hpp
@@ -0,0 +1,81 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+#ifndef HEADER_SCRIPT_SCRIPT_MANAGER
+#define HEADER_SCRIPT_SCRIPT_MANAGER
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+#include <script/context.hpp>
+#include <data/set.hpp>
+
+// ----------------------------------------------------------------------------- : Dependency
+
+/// Types of dependencies
+enum DependencyType
+{	DEP_CARD_FIELD			///< dependency of a script in a "card" field
+,	DEP_CARDS_FIELD			///< dependency of a script in a "card"  field for all cards
+,	DEP_SET_INFO_FIELD		///< dependency of a script in a "set"   field
+,	DEP_STYLESHEET_FIELD	///< dependency of a script in a "style" property
+,	DEP_CARD_COPY_DEP		///< copy the dependencies from a card field
+,	DEP_SET_COPY_DEP		///< copy the dependencies from a set  field
+,	DEP_CHOICE_IMAGE		///< dependency of a generated choice image, index2 gives the index of the choice image
+};
+
+/// A 'pointer' to some script that depends on another script
+class Dependency {
+  public:
+	DependencyType type   : 4;	///< Type of the dependent script
+	UInt           index2 : 10;	///< A second index, used for some types
+	size_t         index;		///< index into an IndexMap
+};
+
+// ----------------------------------------------------------------------------- : Dependencies of data type members
+
+
+
+// ----------------------------------------------------------------------------- : ScriptManager
+
+/// Manager of the script context for a set, keeps scripts up to date
+/** Whenever there is an action all necessary scripts are executed.
+ *  Executes both Value scripts and Style scriptables.
+ *
+ *  The context contains a normal pointer to the set, not a shared_ptr, because the set
+ *  itself owns this object.
+ */
+class ScriptManager : public ActionListener {
+  public:
+	ScriptManager(Set& set);
+	
+  private:
+	Context context; ///< Context for evaluating scripts
+	
+	void initScriptStuff();
+	void initDependencies();
+	void initDependencies(const StyleSheetP&);
+	void initContext(const StyleSheetP&);
+	
+	// Update all styles for a particular card
+	void updateStyles(const CardP& card);
+	/// Updates scripts, starting at some value
+	/** if the value changes any dependend values are updated as well */
+	void updateValue(Value* value, const CardP& card);
+	/// Update all fields of all cards
+	/** Update all set info fields
+	 *  Doesn't update styles
+	 */
+	void updateAll();
+	// Update all values with a specific dependency
+	void updateAllDependend(const vector<Dependency>& dependendScripts);
+	
+  protected:
+	/// Respond to actions by updating scripts
+	void onAction(const Action&, bool undone);
+};
+
+// ----------------------------------------------------------------------------- : EOF
+#endif
diff --git a/src/script/value.hpp b/src/script/value.hpp
index 9c92c1c7..92f031cc 100644
--- a/src/script/value.hpp
+++ b/src/script/value.hpp
@@ -35,6 +35,7 @@ enum ScriptType
 ,	SCRIPT_DOUBLE
 ,	SCRIPT_STRING
 ,	SCRIPT_COLOR
+,	SCRIPT_IMAGE
 ,	SCRIPT_BUILDIN_FUN
 ,	SCRIPT_SCRIPT_FUN
 ,	SCRIPT_OBJECT
diff --git a/src/util/age.cpp b/src/util/age.cpp
new file mode 100644
index 00000000..a883a0c1
--- /dev/null
+++ b/src/util/age.cpp
@@ -0,0 +1,15 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/age.hpp>
+
+// ----------------------------------------------------------------------------- : Age
+
+// what a waste of a source file...
+
+volatile LONG Age::new_age;
diff --git a/src/util/age.hpp b/src/util/age.hpp
new file mode 100644
index 00000000..56fe5ec2
--- /dev/null
+++ b/src/util/age.hpp
@@ -0,0 +1,56 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+#ifndef HEADER_UTIL_AGE
+#define HEADER_UTIL_AGE
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+
+#ifdef _MSC_VER
+	extern "C" {
+		LONG  __cdecl _InterlockedIncrement(LONG volatile *Addend);
+		LONG  __cdecl _InterlockedDecrement(LONG volatile *Addend);
+	}
+	#pragma intrinsic (_InterlockedIncrement)
+	#define InterlockedIncrement _InterlockedIncrement
+	#pragma intrinsic (_InterlockedDecrement)
+	#define InterlockedDecrement _InterlockedDecrement
+#endif
+
+// ----------------------------------------------------------------------------- : Age
+
+/// Represents the age of a value, higher values are newer
+/** Age is counted using a global variable */
+class Age {
+  public:
+	/// Construct a new age value, 
+	Age() {
+		update();
+	}
+	
+	/// Update the age to become the newest one
+	inline void update() {
+		age = InterlockedIncrement(&new_age);
+	}
+	
+	/// Compare two ages, smaller means earlier
+	inline bool operator < (Age a) const { return age < a.age; }
+	
+  private:
+	/// This age
+	LONG age;
+	/// Global age counter, value of the last age created
+	static volatile LONG new_age;
+};
+
+// ----------------------------------------------------------------------------- : Aged
+
+
+
+// ----------------------------------------------------------------------------- : EOF
+#endif
diff --git a/src/util/alignment.hpp b/src/util/alignment.hpp
index 63d84b09..e5fada1d 100644
--- a/src/util/alignment.hpp
+++ b/src/util/alignment.hpp
@@ -33,6 +33,7 @@ enum Alignment
 ,	ALIGN_STRETCH			= 0x2000
 // common combinations
 ,	ALIGN_TOP_LEFT			= ALIGN_TOP    | ALIGN_LEFT
+,	ALIGN_MIDDLE_LEFT		= ALIGN_MIDDLE | ALIGN_LEFT
 ,	ALIGN_MIDDLE_CENTER		= ALIGN_MIDDLE | ALIGN_CENTER
 };
 
diff --git a/src/util/rotation.cpp b/src/util/rotation.cpp
index 425ba334..604c9e52 100644
--- a/src/util/rotation.cpp
+++ b/src/util/rotation.cpp
@@ -146,8 +146,11 @@ void RotatedDC::SetFont(wxFont font, double size) {
 	dc.SetFont(font);
 }
 
-RealSize RotatedDC::GetTextExtent(const String& text) {
+RealSize RotatedDC::GetTextExtent(const String& text) const {
 	int w, h;
 	dc.GetTextExtent(text, &w, &h);
 	return RealSize(w,h) / zoom;
 }
+double RotatedDC::GetCharHeight() const {
+	return dc.GetCharHeight() / zoom;
+}
diff --git a/src/util/rotation.hpp b/src/util/rotation.hpp
index 22a02743..c1c5cc12 100644
--- a/src/util/rotation.hpp
+++ b/src/util/rotation.hpp
@@ -108,7 +108,7 @@ class RotatedDC : public Rotation {
 	RotatedDC(DC& dc, int angle, const RealRect& rect, double zoom, bool high_quality);
 	RotatedDC(DC& dc, const Rotation& rotation, bool high_quality);
   
-	// ----------------------------- : Drawing
+	// --------------------------------------------------- : Drawing
 	
 	void DrawText  (const String& text,   const RealPoint& pos);
 	/// Draw abitmap, it must already be zoomed!
@@ -122,7 +122,7 @@ class RotatedDC : public Rotation {
 	// Fill the dc with the color of the current brush
 	void Fill();
 	
-	// ----------------------------- : Forwarded properties
+	// --------------------------------------------------- : Forwarded properties
 	
 	/// Sets the pen for the dc, does not scale the line width
 	void SetPen(const wxPen&);
@@ -134,7 +134,8 @@ class RotatedDC : public Rotation {
 	/** The font will get the given (internal) point size */
 	void SetFont(wxFont font, double size);
 	
-	RealSize GetTextExtent(const String& text);
+	RealSize GetTextExtent(const String& text) const;
+	double GetCharHeight() const;
 	
 	inline wxDC& getDC() { return dc; }