Refactoring out common code

(bzr r5759)

1 files changed, 169 insertions, 0 deletions

diff --git a/src/common-context.cpp b/src/common-context.cpp
new file mode 100644
index 000000000..a52e83c22
--- /dev/null
+++ b/src/common-context.cpp
@@ -0,0 +1,169 @@
+
+#include "common-context.h"
+
+#include <gtk/gtk.h>
+
+#include "config.h"
+
+#include "forward.h"
+#include "message-context.h"
+
+#define DRAG_DEFAULT 1.0
+#define MIN_PRESSURE      0.0
+#define MAX_PRESSURE      1.0
+#define DEFAULT_PRESSURE  1.0
+
+
+static void sp_common_context_class_init(SPCommonContextClass *klass);
+static void sp_common_context_init(SPCommonContext *erc);
+static void sp_common_context_dispose(GObject *object);
+
+static void sp_common_context_setup(SPEventContext *ec);
+static void sp_common_context_set(SPEventContext *ec, gchar const *key, gchar const *value);
+
+static gint sp_common_context_root_handler(SPEventContext *event_context, GdkEvent *event);
+
+
+static SPEventContextClass *common_parent_class = 0;
+
+GType sp_common_context_get_type(void)
+{
+    static GType type = 0;
+    if (!type) {
+        GTypeInfo info = {
+            sizeof(SPCommonContextClass),
+            0, // base_init
+            0, // base_finalize
+            (GClassInitFunc)sp_common_context_class_init,
+            0, // class_finalize
+            0, // class_data
+            sizeof(SPCommonContext),
+            0, // n_preallocs
+            (GInstanceInitFunc)sp_common_context_init,
+            0 // value_table
+        };
+        type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPCommonContext", &info, static_cast<GTypeFlags>(0));
+    }
+    return type;
+}
+
+
+static void sp_common_context_class_init(SPCommonContextClass *klass)
+{
+    GObjectClass *object_class = (GObjectClass *) klass;
+    SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
+
+    common_parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
+
+    object_class->dispose = sp_common_context_dispose;
+
+    event_context_class->setup = sp_common_context_setup;
+    event_context_class->set = sp_common_context_set;
+    event_context_class->root_handler = sp_common_context_root_handler;
+}
+
+static void sp_common_context_init(SPCommonContext *ctx)
+{
+//     ctx->cursor_shape = cursor_eraser_xpm;
+//     ctx->hot_x = 4;
+//     ctx->hot_y = 4;
+
+    ctx->accumulated = 0;
+    ctx->segments = 0;
+    ctx->currentcurve = 0;
+    ctx->currentshape = 0;
+    ctx->npoints = 0;
+    ctx->cal1 = 0;
+    ctx->cal2 = 0;
+    ctx->repr = 0;
+
+    /* Common values */
+    ctx->cur = NR::Point(0,0);
+    ctx->last = NR::Point(0,0);
+    ctx->vel = NR::Point(0,0);
+    ctx->vel_max = 0;
+    ctx->acc = NR::Point(0,0);
+    ctx->ang = NR::Point(0,0);
+    ctx->del = NR::Point(0,0);
+
+    /* attributes */
+    ctx->dragging = FALSE;
+
+    ctx->mass = 0.3;
+    ctx->drag = DRAG_DEFAULT;
+    ctx->angle = 30.0;
+    ctx->width = 0.2;
+    ctx->pressure = DEFAULT_PRESSURE;
+
+    ctx->vel_thin = 0.1;
+    ctx->flatness = 0.9;
+    ctx->cap_rounding = 0.0;
+
+    ctx->abs_width = false;
+}
+
+static void sp_common_context_dispose(GObject *object)
+{
+    SPCommonContext *ctx = SP_COMMON_CONTEXT(object);
+
+    if (ctx->accumulated) {
+        ctx->accumulated = ctx->accumulated->unref();
+        ctx->accumulated = 0;
+    }
+
+    while (ctx->segments) {
+        gtk_object_destroy(GTK_OBJECT(ctx->segments->data));
+        ctx->segments = g_slist_remove(ctx->segments, ctx->segments->data);
+    }
+
+    if (ctx->currentcurve) {
+        ctx->currentcurve = ctx->currentcurve->unref();
+        ctx->currentcurve = 0;
+    }
+    if (ctx->cal1) {
+        ctx->cal1 = ctx->cal1->unref();
+        ctx->cal1 = 0;
+    }
+    if (ctx->cal2) {
+        ctx->cal2 = ctx->cal2->unref();
+        ctx->cal2 = 0;
+    }
+
+    if (ctx->currentshape) {
+        gtk_object_destroy(GTK_OBJECT(ctx->currentshape));
+        ctx->currentshape = 0;
+    }
+
+    if (ctx->_message_context) {
+        delete ctx->_message_context;
+        ctx->_message_context = 0;
+    }
+
+    G_OBJECT_CLASS(common_parent_class)->dispose(object);
+}
+
+
+static void sp_common_context_setup(SPEventContext */*ec*/)
+{
+}
+
+
+static void sp_common_context_set(SPEventContext */*ec*/, gchar const */*key*/, gchar const */*value*/)
+{
+}
+
+static gint sp_common_context_root_handler(SPEventContext */*event_context*/, GdkEvent */*event*/)
+{
+  return 0;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :