Mercurial > projects > doodle
diff doodle/dia/standard_tools.d @ 28:1754cb773d41
Part-way through getting to compile with configure/builder.
author | Graham St Jack <graham.stjack@internode.on.net> |
---|---|
date | Sun, 02 Aug 2009 16:27:21 +0930 |
parents | dia/standard_tools.d@f3d91579bb28 |
children | c2f11e1d7470 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/doodle/dia/standard_tools.d Sun Aug 02 16:27:21 2009 +0930 @@ -0,0 +1,155 @@ +module doodle.dia.standard_tools; + +public { + import doodle.dia.tool; +} + +private { + import doodle.cairo.routines; + import std.math; + import std.stdio; +} + +final class PanTool : Tool { + override bool handle_button_press(scope Viewport viewport, in ButtonEvent event) { + if (event.button_name == ButtonName.MIDDLE) { + mLastPosition = event.pixel_point; + return true; + } + else { + return false; + } + } + + override bool handle_motion(scope Viewport viewport, in MotionEvent event) { + if (event.mask.is_set(Modifier.MIDDLE_BUTTON)) { + viewport.pan_relative(mLastPosition - event.pixel_point); + mLastPosition = event.pixel_point; + + return true; + } + else { + return false; + } + } + + override bool handle_scroll(scope Viewport viewport, in ScrollEvent event) { + if (event.mask.is_unset(Modifier.MIDDLE_BUTTON)) { + Vector delta; + + switch (event.scroll_direction) { + case ScrollDirection.UP: + delta = event.mask.is_set(Modifier.SHIFT) ? Vector(AMOUNT, 0.0) : Vector(0.0, AMOUNT); + break; + case ScrollDirection.DOWN: + delta = event.mask.is_set(Modifier.SHIFT) ? Vector(-AMOUNT, 0.0) : Vector(0.0, -AMOUNT); + break; + case ScrollDirection.LEFT: + delta = Vector(-AMOUNT, 0.0); + break; + case ScrollDirection.RIGHT: + delta = Vector(AMOUNT, 0.0); + break; + } + + viewport.pan_relative(delta); + } + + return true; + } + + private { + Point mLastPosition; + static invariant double AMOUNT = 60.0; + } +} + +final class ZoomTool : Tool { + override bool handle_scroll(scope Viewport viewport, in ScrollEvent event) { + if (event.mask.is_set(Modifier.CONTROL)) { + if (event.scroll_direction == ScrollDirection.DOWN) { + viewport.zoom_relative(event.pixel_point, 1.0 / ZOOM); + return true; + } + else if (event.scroll_direction == ScrollDirection.UP) { + viewport.zoom_relative(event.pixel_point, ZOOM); + return true; + } + else { + return false; + } + } + else { + return false; + } + } + + private { + static invariant double ZOOM = sqrt(2.0); + } +} + +final class LassoTool : Tool { + override bool handle_button_press(scope Viewport viewport, in ButtonEvent event) { + if (event.button_name == ButtonName.LEFT) { + mActive = true; + mAnchorPoint = mCurrentPoint = event.pixel_point; + viewport.set_cursor(Cursor.HAND); + return true; + } + else { + return false; + } + } + + override bool handle_button_release(scope Viewport viewport, in ButtonEvent event) { + if (event.button_name == ButtonName.LEFT && mActive) { + mActive = false; + viewport.damage_pixel(Rectangle(mAnchorPoint, mCurrentPoint).feathered(LINE_WIDTH / 2.0)); + viewport.set_cursor(Cursor.DEFAULT); + return true; + } + else { + return false; + } + } + + override bool handle_motion(scope Viewport viewport, in MotionEvent event) { + if (mActive) { + viewport.damage_pixel(Rectangle(mAnchorPoint, mCurrentPoint).feathered(LINE_WIDTH / 2.0)); + mCurrentPoint = event.pixel_point; + viewport.damage_pixel(Rectangle(mAnchorPoint, mCurrentPoint).feathered(LINE_WIDTH / 2.0)); + } + + return false; + } + + override void draw(in Viewport viewport, + in Rectangle pixel_damage, scope Context pixel_cr, + in Rectangle model_damage, scope Context model_cr) const { + if (mActive) { + pixel_cr.save; { + pixel_cr.setSourceRgba(0.0, 0.0, 0.8, 0.3); + rectangle(pixel_cr, Rectangle(mCurrentPoint, mAnchorPoint)); + pixel_cr.fill(); + } pixel_cr.restore(); + + pixel_cr.save(); { + //double[] dashes = [ 4.0, 4.0 ]; + //pixel_cr.setDash(dashes, 0.0); + pixel_cr.setSourceRgba(0.0, 0.0, 0.5, 1.0); + pixel_cr.setLineWidth(LINE_WIDTH); + //writefln("Drawing rectangle: %s", Rectangle(mCurrentPoint, mAnchorPoint)); + rectangle(pixel_cr, Rectangle(mCurrentPoint, mAnchorPoint)); + pixel_cr.stroke; + } pixel_cr.restore; + } + } + + private { + bool mActive; + Point mCurrentPoint; + Point mAnchorPoint; // Pixel + static invariant double LINE_WIDTH = 1.0; + } +}