290 lines
9.8 KiB
C++
290 lines
9.8 KiB
C++
#include "Drawer.h"
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#include "Window.h"
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#include <GL/gl.h>
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#include <math.h>
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void Drawer::realize(GtkWidget *widget, Drawer *drawer) {
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GdkGLContext *context = gtk_widget_get_gl_context(widget);
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GdkGLDrawable *drawable = gtk_widget_get_gl_drawable(widget);
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if(!gdk_gl_drawable_gl_begin(drawable, context))
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return;
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glClearColor(0, 0, 0, 1);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glEnable(GL_BLEND);
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glEnable(GL_LINE_SMOOTH);
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glEnable(GL_POINT_SMOOTH);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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gdk_gl_drawable_gl_end(drawable);
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}
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gboolean Drawer::eventHandler(GtkWidget *widget, GdkEvent *event, Drawer *drawer) {
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switch(event->type) {
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case GDK_CONFIGURE:
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drawer->updateViewport();
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drawer->updateScrollbars();
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return TRUE;
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case GDK_EXPOSE:
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drawer->render();
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return TRUE;
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case GDK_MOTION_NOTIFY:
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drawer->updateHoveredPoint(event->motion.x, event->motion.y);
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drawer->window->getActiveTool()->getEventHandler()->motion();
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return TRUE;
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case GDK_ENTER_NOTIFY:
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drawer->updateHoveredPoint(event->crossing.x, event->crossing.y);
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drawer->window->getActiveTool()->getEventHandler()->motion();
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return TRUE;
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case GDK_LEAVE_NOTIFY:
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drawer->window->getEditManager().setHoveredVertex(NULL);
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drawer->window->getActiveTool()->getEventHandler()->motion();
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return TRUE;
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case GDK_BUTTON_PRESS:
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drawer->window->getActiveTool()->getEventHandler()->buttonPress(event->button.button);
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return TRUE;
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case GDK_BUTTON_RELEASE:
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drawer->window->getActiveTool()->getEventHandler()->buttonRelease(event->button.button);
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return TRUE;
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case GDK_SCROLL:
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switch(event->scroll.direction) {
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case GDK_SCROLL_UP:
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drawer->zoom(1, event->scroll.x/widget->allocation.width, event->scroll.y/widget->allocation.height);
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break;
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case GDK_SCROLL_DOWN:
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drawer->zoom(-1, event->scroll.x/widget->allocation.width, event->scroll.y/widget->allocation.height);
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break;
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default:
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return FALSE;
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}
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return TRUE;
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default:
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return FALSE;
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}
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}
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void Drawer::valueChanged(GtkAdjustment *adjustment, Drawer *drawer) {
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drawer->updateScrolling();
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}
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void Drawer::updateViewport() {
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GdkGLContext *context = gtk_widget_get_gl_context(drawingArea);
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GdkGLDrawable *drawable = gtk_widget_get_gl_drawable(drawingArea);
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if(!gdk_gl_drawable_gl_begin(drawable, context))
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return;
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glViewport(0, 0, getWidth(), getHeight());
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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if(getWidth() != 0 && getHeight() != 0)
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glScalef(2.0f/getWidth(), -2.0f/getHeight(), 1);
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gdk_gl_drawable_gl_end(drawable);
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}
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void Drawer::updateScrolling() {
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if((getImageWidth())*scale < getWidth())
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xCenter = 0;
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else
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xCenter = gtk_adjustment_get_value(hAdjustment);
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g_object_set(G_OBJECT(hRuler), "lower", xCenter-getWidth()/scale/2, "upper", xCenter+getWidth()/scale/2, NULL);
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if((getImageHeight())*scale < getHeight())
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yCenter = 0;
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else
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yCenter = gtk_adjustment_get_value(vAdjustment);
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g_object_set(G_OBJECT(vRuler), "lower", yCenter-getHeight()/scale/2, "upper", yCenter+getHeight()/scale/2, NULL);
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gtk_widget_queue_draw(drawingArea);
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}
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void Drawer::updateScrollbars(float x, float y) {
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const gdouble imageWidth = getImageWidth(), imageHeight = getImageHeight();
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const gdouble minX = -imageWidth/2, maxX = imageWidth/2;
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const gdouble minY = -imageHeight/2, maxY = imageHeight/2;
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const gdouble width = getWidth()/scale, height = getHeight()/scale;
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gdouble lower, upper, pageSize, value;
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gdk_window_freeze_updates(drawingArea->window);
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g_object_get(G_OBJECT(hAdjustment), "lower", &lower, "upper", &upper, "page_size", &pageSize, NULL);
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g_object_set(G_OBJECT(hAdjustment), "lower", minX + width/2, "upper", maxX + width/2, "page_size", width, NULL);
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gtk_adjustment_changed(hAdjustment);
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if(pageSize > (upper-lower) && width < imageWidth)
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value = 0;
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else
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value = gtk_adjustment_get_value(hAdjustment) + (x-0.5)*pageSize*(pageSize/width-1);
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gtk_adjustment_set_value(hAdjustment, MAX(MIN(value, maxX - width/2), minX + width/2));
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g_object_get(G_OBJECT(vAdjustment), "lower", &lower, "upper", &upper, "page_size", &pageSize, NULL);
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g_object_set(G_OBJECT(vAdjustment), "lower", minY + height/2, "upper", maxY + height/2, "page_size", height, NULL);
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gtk_adjustment_changed(vAdjustment);
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if(pageSize > (upper-lower) && height < imageHeight)
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value = 0;
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else
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value = gtk_adjustment_get_value(vAdjustment) + (y-0.5)*pageSize*(pageSize/height-1);
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gtk_adjustment_set_value(vAdjustment, MAX(MIN(value, maxY - height/2), minY + height/2));
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gdk_window_thaw_updates(drawingArea->window);
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updateScrolling();
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}
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void Drawer::updateHoveredPoint(float x, float y) {
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Vertex v(x, y);
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viewToImage(&v);
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window->getEditManager().setHoveredVertex(&v);
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g_object_set(G_OBJECT(hRuler), "position", v.getX(), NULL);
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g_object_set(G_OBJECT(vRuler), "position", v.getY(), NULL);
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}
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void Drawer::render() {
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GdkGLContext *context = gtk_widget_get_gl_context(drawingArea);
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GdkGLDrawable *drawable = gtk_widget_get_gl_drawable(drawingArea);
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Rectangle rect(0, 0, drawingArea->allocation.width, drawingArea->allocation.height);
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viewToImage(&rect.getVertex1());
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viewToImage(&rect.getVertex2());
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if(!gdk_gl_drawable_gl_begin(drawable, context))
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return;
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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glScalef(scale, scale, 1);
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glTranslatef(-xCenter, -yCenter, 0);
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renderer.render(window->getLevel(), rect, scale);
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if(window->getActiveTool()->getRenderer())
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window->getActiveTool()->getRenderer()->render(window->getLevel(), rect, scale);
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glMatrixMode(GL_MODELVIEW);
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glPopMatrix();
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gdk_gl_drawable_swap_buffers(drawable);
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gdk_gl_drawable_gl_end(drawable);
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}
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Drawer::Drawer(Window *window, GdkGLConfig *glconfig) : renderer(&window->getEditManager()) {
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this->window = window;
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zoomExp = 0;
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scale = 100;
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xCenter = 0;
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yCenter = 0;
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drawer = gtk_table_new(3, 3, FALSE);
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g_object_ref_sink(G_OBJECT(drawer));
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drawingArea = gtk_drawing_area_new();
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gtk_widget_set_gl_capability(drawingArea, glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE);
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g_signal_connect(G_OBJECT(drawingArea), "realize", G_CALLBACK(realize), this);
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g_signal_connect(G_OBJECT(drawingArea), "configure-event", G_CALLBACK(eventHandler), this);
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g_signal_connect(G_OBJECT(drawingArea), "expose-event", G_CALLBACK(eventHandler), this);
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g_signal_connect(G_OBJECT(drawingArea), "button-press-event", G_CALLBACK(eventHandler), this);
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g_signal_connect(G_OBJECT(drawingArea), "button-release-event", G_CALLBACK(eventHandler), this);
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g_signal_connect(G_OBJECT(drawingArea), "enter-notify-event", G_CALLBACK(eventHandler), this);
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g_signal_connect(G_OBJECT(drawingArea), "leave-notify-event", G_CALLBACK(eventHandler), this);
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g_signal_connect(G_OBJECT(drawingArea), "motion-notify-event", G_CALLBACK(eventHandler), this);
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g_signal_connect(G_OBJECT(drawingArea), "scroll-event", G_CALLBACK(eventHandler), this);
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gtk_widget_add_events(drawingArea, GDK_SCROLL_MASK | GDK_POINTER_MOTION_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_BUTTON_RELEASE_MASK);
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gtk_table_attach(GTK_TABLE(drawer), drawingArea, 1, 2, 1, 2, (GtkAttachOptions)(GTK_FILL|GTK_EXPAND|GTK_SHRINK), (GtkAttachOptions)(GTK_FILL|GTK_EXPAND|GTK_SHRINK), 0, 0);
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hAdjustment = GTK_ADJUSTMENT(gtk_adjustment_new(0, 0, 0, 10, 100, 100));
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GtkWidget *hScroll = gtk_hscrollbar_new(hAdjustment);
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g_signal_connect(G_OBJECT(hScroll), "value-changed", G_CALLBACK(valueChanged), this);
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gtk_table_attach(GTK_TABLE(drawer), hScroll, 1, 2, 2, 3, (GtkAttachOptions)(GTK_FILL|GTK_EXPAND|GTK_SHRINK), (GtkAttachOptions)0, 0, 0);
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vAdjustment = GTK_ADJUSTMENT(gtk_adjustment_new(0, 0, 0, 10, 100, 100));
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GtkWidget *vScroll = gtk_vscrollbar_new(vAdjustment);
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g_signal_connect(G_OBJECT(vScroll), "value-changed", G_CALLBACK(valueChanged), this);
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gtk_table_attach(GTK_TABLE(drawer), vScroll, 2, 3, 1, 2, (GtkAttachOptions)0, (GtkAttachOptions)(GTK_FILL|GTK_EXPAND|GTK_SHRINK), 0, 0);
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hRuler = gtk_hruler_new();
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gtk_table_attach(GTK_TABLE(drawer), hRuler, 1, 2, 0, 1, (GtkAttachOptions)(GTK_FILL|GTK_EXPAND|GTK_SHRINK), (GtkAttachOptions)0, 0, 0);
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vRuler = gtk_vruler_new();
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gtk_table_attach(GTK_TABLE(drawer), vRuler, 0, 1, 1, 2, (GtkAttachOptions)0, (GtkAttachOptions)(GTK_FILL|GTK_EXPAND|GTK_SHRINK), 0, 0);
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gtk_widget_show_all(drawer);
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}
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Drawer::~Drawer() {
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g_object_unref(G_OBJECT(drawer));
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}
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void Drawer::zoom(int zoom, float x, float y) {
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zoomExp = MAX(MIN(zoomExp + zoom, 50), -100);
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scale = 100*powf(1.1f, zoomExp);
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updateScrollbars(x, y);
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}
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void Drawer::imageToView(Vertex *v) const {
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v->setX((v->getX()-xCenter)*scale + getWidth()/2);
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v->setY((v->getY()-yCenter)*scale + getHeight()/2);
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}
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void Drawer::viewToImage(Vertex *v) const {
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v->setX((v->getX()-getWidth()/2)/scale+xCenter);
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v->setY((v->getY()-getHeight()/2)/scale+yCenter);
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}
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float Drawer::getImageWidth() const {
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float max = 0;
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for(Level::iterator object = window->getLevel().begin(); object != window->getLevel().end(); object++) {
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if((*object)->isOfType("Room")) {
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Room *room = (Room*)&**object;
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for(Room::iterator v = room->begin(); v != room->end(); v++) {
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max = fmaxf(max, fabsf(v->getX()));
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}
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}
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}
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return (2*max+1);
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}
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float Drawer::getImageHeight() const {
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float max = 0;
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for(Level::iterator object = window->getLevel().begin(); object != window->getLevel().end(); object++) {
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if((*object)->isOfType("Room")) {
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Room *room = (Room*)&**object;
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for(Room::iterator v = room->begin(); v != room->end(); v++) {
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max = fmaxf(max, fabsf(v->getY()));
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}
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}
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}
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return (2*max+1);
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}
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