tTurn the basic framework into a single .c and .h file pair - ltkx - GUI toolkit for X11 (WIP)
HTML git clone git://lumidify.org/ltkx.git
DIR Log
DIR Files
DIR Refs
DIR README
DIR LICENSE
---
DIR commit a8d438e533db40481c75ddd952a14f14b6f68c94
DIR parent 8a3b7084765b5ce72d0e55adf283e737a0049e03
HTML Author: lumidify <nobody@lumidify.org>
Date: Thu, 5 Jan 2017 10:24:48 +0100
Turn the basic framework into a single .c and .h file pair
Diffstat:
M Makefile | 2 +-
D common.c | 208 -------------------------------
D common.h | 187 -------------------------------
M ltk.c | 328 +++++++++++++++++++++++++++++++
M ltk.h | 246 ++++++++++++++++++++++++++++++-
D theme.c | 64 -------------------------------
D theme.h | 51 -------------------------------
D window.c | 153 -------------------------------
D window.h | 54 -------------------------------
9 files changed, 571 insertions(+), 722 deletions(-)
---
DIR diff --git a/Makefile b/Makefile
t@@ -1,7 +1,7 @@
LIBS = -lX11 -lm -ldl
STD = -std=c89
FLAGS = -g -w -Wall -Werror -Wextra -pedantic
-CFILES = ltk.c cJSON.c common.c grid.c window.c theme.c button.c test1.c
+CFILES = ltk.c cJSON.c grid.c button.c test1.c
all: test1.c
gcc $(STD) $(FLAGS) $(LIBS) $(CFILES) -o test
DIR diff --git a/common.c b/common.c
t@@ -1,208 +0,0 @@
-/*
- * This file is part of the Lumidify ToolKit (LTK)
- * Copyright (c) 2016, 2017 Lumidify Productions <lumidify@openmailbox.org>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include "ltk.h"
-
-char *ltk_read_file(const char *path)
-{
- FILE *f;
- long len;
- char *file_contents;
- f = fopen(path, "rb");
- fseek(f, 0, SEEK_END);
- len = ftell(f);
- fseek(f, 0, SEEK_SET);
- file_contents = malloc(len + 1);
- fread(file_contents, 1, len, f);
- file_contents[len] = '\0';
- fclose(f);
-
- return file_contents;
-}
-
-int ltk_collide_rect(LtkRect rect, int x, int y)
-{
- return (rect.x <= x && (rect.x + rect.w) >= x && rect.y <= y && (rect.y + rect.h) >= y);
-}
-
-void ltk_remove_active_widget(void *widget)
-{
- if (!widget) return;
- LtkWidget *parent = widget;
- LtkWidget *child;
- while (parent->active_widget)
- {
- child = parent->active_widget;
- child->state = LTK_NORMAL;
- child->draw(child);
- parent->active_widget = NULL;
- parent = child;
- }
-}
-
-void ltk_change_active_widget_state(void *widget, LtkWidgetState state)
-{
- if (!widget) return;
- LtkWidget *ptr = widget;
- while (ptr = ptr->active_widget)
- {
- ptr->state = state;
- ptr->draw(ptr);
- }
-}
-
-void ltk_remove_hover_widget(void *widget)
-{
- if (!widget) return;
- LtkWidget *parent = widget;
- LtkWidget *child;
- while (parent->hover_widget)
- {
- child = parent->hover_widget;
- child->state = child->state == LTK_HOVERACTIVE ? LTK_ACTIVE : LTK_NORMAL;
- child->draw(child);
- parent->hover_widget = NULL;
- parent = child;
- }
-}
-
-LtkWidget ltk_create_widget(LtkWindow *window, void (*draw)(void *), void (*destroy)(void *), int needs_redraw)
-{
- LtkWidget widget;
- widget.window = window;
- widget.active_widget = NULL;
- widget.hover_widget = NULL;
- widget.parent = NULL;
-
- widget.key_press = NULL;
- widget.key_release = NULL;
- widget.mouse_press = NULL;
- widget.mouse_release = NULL;
- widget.motion_notify = NULL;
-
- widget.resize = NULL;
- widget.draw = draw;
- widget.destroy = destroy;
-
- widget.needs_redraw = needs_redraw;
- widget.state = LTK_NORMAL;
- widget.row = 0;
- widget.rect.x = 0;
- widget.rect.y = 0;
- widget.rect.w = 100;
- widget.rect.h = 100;
-
- widget.row = NULL;
- widget.column = NULL;
- widget.row_span = NULL;
- widget.column_span = NULL;
- widget.sticky = NULL;
-
- return widget;
-}
-
-void ltk_mouse_press_event(void *widget, XEvent event)
-{
- LtkWidget *ptr = widget;
- if (!ptr || ptr->state == LTK_DISABLED) return;
- if (event.xbutton.button == 1)
- {
- LtkWidget *parent = ptr->parent;
- if (parent)
- {
- ltk_remove_active_widget(parent);
- parent->active_widget = ptr;
- }
- ptr->state = LTK_PRESSED;
- if (ptr->needs_redraw) ptr->draw(ptr);
- }
- if (ptr->mouse_press)
- {
- ptr->mouse_press(ptr, event);
- }
-}
-
-void ltk_mouse_release_event(void *widget, XEvent event)
-{
- LtkWidget *ptr = widget;
- if (!ptr || ptr->state == LTK_DISABLED) return;
- if (ptr->state == LTK_PRESSED)
- {
- ptr->state = LTK_HOVERACTIVE;
- if (ptr->needs_redraw) ptr->draw(ptr);
- }
- if (ptr->mouse_release)
- {
- ptr->mouse_release(ptr, event);
- }
-}
-
-void ltk_motion_notify_event(void *widget, XEvent event)
-{
- LtkWidget *ptr = widget;
- if (ptr && (ptr->state == LTK_NORMAL || ptr->state == LTK_ACTIVE) &&
- (event.xmotion.state & Button1Mask) != Button1Mask)
- {
- ptr->state = ptr->state == LTK_ACTIVE ? LTK_HOVERACTIVE : LTK_HOVER;
- LtkWidget *parent = ptr->parent;
- if (parent)
- {
- ltk_remove_hover_widget(parent);
- parent->hover_widget = ptr;
- }
- if (ptr->needs_redraw) ptr->draw(ptr);
- }
- if (ptr->motion_notify)
- {
- ptr->motion_notify(ptr, event);
- }
-}
-
-void ltk_handle_event(XEvent event)
-{
- LtkWindow *window;
- LtkWidget *root_widget;
- HASH_FIND_INT(ltk_global->window_hash, &event.xany.window, window);
- if (!window) return;
- root_widget = window->root_widget;
- switch (event.type)
- {
- case KeyPress:
- break;
- case KeyRelease:
- break;
- case ButtonPress:
- if (root_widget) ltk_mouse_press_event(root_widget, event);
- break;
- case ButtonRelease:
- if (root_widget) ltk_mouse_release_event(root_widget, event);
- break;
- case MotionNotify:
- if (root_widget) ltk_motion_notify_event(root_widget, event);
- break;
- default:
- /* FIXME: users should be able to register other events like closing the window */
- if (window->other_event)
- window->other_event(window, event);
- }
-}
DIR diff --git a/common.h b/common.h
t@@ -1,187 +0,0 @@
-/*
- * This file is part of the Lumidify ToolKit (LTK)
- * Copyright (c) 2016, 2017 Lumidify Productions <lumidify@openmailbox.org>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#ifndef _LTK_COMMON_H_
-#define _LTK_COMMON_H_
-
-typedef struct LtkWidget LtkWidget;
-typedef struct LtkWindow LtkWindow;
-
-/*
- * Struct to represent a rectangle.
- */
-typedef struct
-{
- int x;
- int y;
- int w;
- int h;
-} LtkRect;
-
-typedef enum {
- LTK_STICKY_LEFT = 1 << 0,
- LTK_STICKY_RIGHT = 1 << 1,
- LTK_STICKY_TOP = 1 << 2,
- LTK_STICKY_BOTTOM = 1 << 3
-} LtkStickyMask;
-
-/*
- * An enumeration of all widget states.
- */
-typedef enum
-{
- LTK_NORMAL = 0,
- LTK_HOVER = 1,
- LTK_PRESSED = 2,
- LTK_ACTIVE = 3,
- LTK_HOVERACTIVE = 4,
- LTK_DISABLED = 5
-} LtkWidgetState;
-
-/*
- * A struct to contain all basic widget information.
- * First element of every widget so the widget can
- * be cast to LtkWidget.
- */
-typedef struct LtkWidget
-{
- /* The window the widget will be displayed on */
- LtkWindow *window;
- /* For container widgets; the widget that is currently active */
- struct LtkWidget *active_widget;
- /* For container widgets; the widget that is currently highlighted */
- struct LtkWidget *hover_widget;
- /* Parent widget */
- struct LtkWidget *parent;
-
- /* Called on KeyPress events */
- void (*key_press)(void *, XEvent event);
- /* Called on KeyRelease events */
- void (*key_release)(void *, XEvent event);
- /* Called on ButtonPress events */
- void (*mouse_press)(void *, XEvent event);
- /* Called on ButtonRelease event */
- void (*mouse_release)(void *, XEvent event);
- /* Called on MotionNotify events */
- void (*motion_notify)(void *, XEvent event);
-
- /* Function to update the widget after its LtkRect has been modified */
- void (*resize)(void *);
- /* Function to draw the widget */
- void (*draw)(void *);
- /* Function to destroy the widget */
- void (*destroy)(void *);
-
- /* Position and size of the widget */
- LtkRect rect;
- /* Row of widget if gridded */
- unsigned int row;
- /* Column of widget if gridded */
- unsigned int column;
- /* Row span of widget if gridded */
- unsigned int row_span;
- /* Column span of widget if gridded */
- unsigned int column_span;
- /* Specifies if the widget needs to be redrawn after a state change */
- int needs_redraw : 1;
- /* State of the widget */
- LtkWidgetState state : 3;
- /* Similar to sticky in tk */
- unsigned short sticky : 4;
-} LtkWidget;
-
-
-/*
- * Check if a rectangle collides with a point.
- * rect: The rectangle.
- * x: The x coordinate of the point.
- * y: The y coordinate of the point.
- */
-int ltk_collide_rect(LtkRect rect, int x, int y);
-
-/*
- * Read a file and return a null-terminated string with the contents.
- * path: The path to the file.
- */
-char *ltk_read_file(const char *path);
-
-/*
- * Recursively set the state of all active_widgets in 'widget' to 'state'.
- */
-void ltk_change_active_widget_state(void *widget, LtkWidgetState state);
-
-/*
- * Recursively set the state of all active_widgets in 'widget' to LTK_NORMAL,
- * redraw the widgets, and remove the references to them from their parents.
- */
-void ltk_remove_active_widget(void *widget);
-
-/*
- * Recursively set the state of all hover_widgets in 'widget' to LTK_NORMAL or
- * LTK_ACTIVE, redraw the widgets, and remove the references to them from their parents.
- */
-void ltk_remove_hover_widget(void *widget);
-
-/*
- * Create a widget.
- * window: The window the widget is to be shown on.
- * draw: The function used to draw the widget.
- * destroy: The function used to destroy the widget.
- * needs_redraw: Flag to indicate if the widget needs to be
- * be redrawn when it is resized.
- * Returns: The new LtkWidget.
- */
-LtkWidget ltk_create_widget(LtkWindow *window, void (*draw)(void *), void (*destroy)(void *), int needs_redraw);
-
-/*
- * Handles mouse press events for all widgets and calls
- * specific widget handlers if set.
- * widget: Pointer to the widget the mouse is currrently on.
- * event: The event to be handled.
- */
-void ltk_mouse_press_event(void *widget, XEvent event);
-
-/*
- * Handles mouse release events for all widgets and calls
- * specific widget handlers if set.
- * widget: Pointer to the widget the mouse is currrently on.
- * event: The event to be handled.
- */
-void ltk_mouse_release_event(void *widget, XEvent event);
-
-/*
- * Handles mouse motion events for all widgets and calls
- * specific widget handlers if set.
- * widget: Pointer to the widget the mouse is currrently on.
- * event: The event to be handled.
- */
-void ltk_motion_notify_event(void *widget, XEvent event);
-
-/*
- * Handles all events and dispatches them to their
- * respective handlers.
- * event: The event to be handled.
- */
-void ltk_handle_event(XEvent event);
-
-#endif
DIR diff --git a/ltk.c b/ltk.c
t@@ -91,3 +91,330 @@ void ltk_mainloop(void)
*/
}
}
+
+LtkWindowTheme *ltk_parse_window_theme(cJSON *window_json)
+{
+ LtkWindowTheme *window_theme = malloc(sizeof(LtkWindowTheme));
+ if (!window_theme) ltk_fatal("No memory for new LtkWindowTheme\n");
+ cJSON *border_width = cJSON_GetObjectItem(window_json, "border-width");
+ cJSON *fg = cJSON_GetObjectItem(window_json, "foreground");
+ cJSON *bg = cJSON_GetObjectItem(window_json, "background");
+ window_theme->border_width = border_width ? border_width->valueint : 0;
+ window_theme->fg = ltk_create_xcolor(fg->valuestring);
+ window_theme->bg = ltk_create_xcolor(bg->valuestring);
+
+ return window_theme;
+}
+
+void ltk_redraw_window(LtkWindow *window)
+{
+ LtkWidget *ptr;
+ if (!window)
+ {
+ return;
+ }
+ if (!window->root_widget)
+ {
+ return;
+ }
+ ptr = window->root_widget;
+ ptr->draw(ptr);
+}
+
+LtkWindow *ltk_create_window(const char *title, int x, int y, unsigned int w, unsigned int h)
+{
+ LtkWindow *window = malloc(sizeof(LtkWindow));
+ if (!window) ltk_fatal("Not enough memory left for window!\n");
+ LtkWindowTheme *wtheme = ltk_global->theme->window; /* For convenience */
+ Display *display = ltk_global->display; /* For convenience */
+ window->xwindow = XCreateSimpleWindow(display, DefaultRootWindow(display), x, y, w, h, wtheme->border_width, wtheme->fg.pixel, wtheme->bg.pixel);
+ window->gc = XCreateGC(display, window->xwindow, 0, 0);
+ XSetForeground(display, window->gc, wtheme->fg.pixel);
+ XSetBackground(display, window->gc, wtheme->bg.pixel);
+ XSetStandardProperties(display, window->xwindow, title, NULL, None, NULL, 0, NULL);
+ XSetWMProtocols(display, window->xwindow, <k_global->wm_delete_msg, 1);
+ window->root_widget = NULL;
+
+ window->other_event = <k_window_other_event;
+
+ window->rect.w = 0;
+ window->rect.h = 0;
+ window->rect.x = 0;
+ window->rect.y = 0;
+
+ XClearWindow(display, window->xwindow);
+ XMapRaised(display, window->xwindow);
+ XSelectInput(display, window->xwindow, ExposureMask|KeyPressMask|KeyReleaseMask|ButtonPressMask|ButtonReleaseMask|StructureNotifyMask|PointerMotionMask);
+
+ HASH_ADD_INT(ltk_global->window_hash, xwindow, window);
+
+ return window;
+}
+
+void ltk_remove_window(LtkWindow *window)
+{
+ ltk_destroy_window(window);
+ if (!ltk_global->window_hash) ltk_quit();
+}
+
+void ltk_destroy_window(LtkWindow *window)
+{
+ HASH_DEL(ltk_global->window_hash, window);
+ LtkWidget *ptr = window->root_widget;
+ if (ptr) ptr->destroy(ptr);
+ XDestroyWindow(ltk_global->display, window->xwindow);
+ free(window);
+}
+
+void ltk_window_other_event(void *widget, XEvent event)
+{
+ LtkWindow *window = widget;
+ LtkWidget *ptr = window->root_widget;
+ if (event.type == ConfigureNotify)
+ {
+ unsigned int w, h;
+ w = event.xconfigure.width;
+ h = event.xconfigure.height;
+ if (ptr && ptr->resize && (window->rect.w != w || window->rect.h != h))
+ {
+ window->rect.w = w;
+ window->rect.h = h;
+ ptr->rect.w = w;
+ ptr->rect.h = h;
+ ptr->resize(ptr);
+ ltk_redraw_window(window);
+ }
+ }
+ if (event.type == Expose && event.xexpose.count == 0)
+ {
+ ltk_redraw_window(window);
+ }
+ if (event.type == ClientMessage && event.xclient.data.l[0] == ltk_global->wm_delete_msg)
+ {
+ ltk_remove_window(window);
+ }
+}
+
+LtkTheme *ltk_load_theme(const char *path)
+{
+ char *file_contents = ltk_read_file(path);
+
+ cJSON *json = cJSON_Parse(file_contents);
+ if (!json)
+ {
+ printf("Theme error before: [%s]\n", cJSON_GetErrorPtr());
+ return NULL;
+ }
+ cJSON *button_json = cJSON_GetObjectItem(json, "button");
+ if (!button_json)
+ {
+ printf("Theme error before: [%s]\n", cJSON_GetErrorPtr());
+ return NULL;
+ }
+ cJSON *window_json = cJSON_GetObjectItem(json, "window");
+ if (!window_json)
+ {
+ printf("Theme error before: [%s]\n", cJSON_GetErrorPtr());
+ return NULL;
+ }
+
+ LtkTheme *theme = malloc(sizeof(LtkTheme));
+ theme->button = ltk_parse_button_theme(button_json);
+ theme->window = ltk_parse_window_theme(window_json);
+
+ free(file_contents);
+ cJSON_Delete(json);
+
+ return theme;
+}
+
+void ltk_destroy_theme(LtkTheme *theme)
+{
+ free(theme->button);
+ free(theme->window);
+ free(theme);
+}
+
+char *ltk_read_file(const char *path)
+{
+ FILE *f;
+ long len;
+ char *file_contents;
+ f = fopen(path, "rb");
+ fseek(f, 0, SEEK_END);
+ len = ftell(f);
+ fseek(f, 0, SEEK_SET);
+ file_contents = malloc(len + 1);
+ fread(file_contents, 1, len, f);
+ file_contents[len] = '\0';
+ fclose(f);
+
+ return file_contents;
+}
+
+int ltk_collide_rect(LtkRect rect, int x, int y)
+{
+ return (rect.x <= x && (rect.x + rect.w) >= x && rect.y <= y && (rect.y + rect.h) >= y);
+}
+
+void ltk_remove_active_widget(void *widget)
+{
+ if (!widget) return;
+ LtkWidget *parent = widget;
+ LtkWidget *child;
+ while (parent->active_widget)
+ {
+ child = parent->active_widget;
+ child->state = LTK_NORMAL;
+ child->draw(child);
+ parent->active_widget = NULL;
+ parent = child;
+ }
+}
+
+void ltk_change_active_widget_state(void *widget, LtkWidgetState state)
+{
+ if (!widget) return;
+ LtkWidget *ptr = widget;
+ while (ptr = ptr->active_widget)
+ {
+ ptr->state = state;
+ ptr->draw(ptr);
+ }
+}
+
+void ltk_remove_hover_widget(void *widget)
+{
+ if (!widget) return;
+ LtkWidget *parent = widget;
+ LtkWidget *child;
+ while (parent->hover_widget)
+ {
+ child = parent->hover_widget;
+ child->state = child->state == LTK_HOVERACTIVE ? LTK_ACTIVE : LTK_NORMAL;
+ child->draw(child);
+ parent->hover_widget = NULL;
+ parent = child;
+ }
+}
+
+LtkWidget ltk_create_widget(LtkWindow *window, void (*draw)(void *), void (*destroy)(void *), int needs_redraw)
+{
+ LtkWidget widget;
+ widget.window = window;
+ widget.active_widget = NULL;
+ widget.hover_widget = NULL;
+ widget.parent = NULL;
+
+ widget.key_press = NULL;
+ widget.key_release = NULL;
+ widget.mouse_press = NULL;
+ widget.mouse_release = NULL;
+ widget.motion_notify = NULL;
+
+ widget.resize = NULL;
+ widget.draw = draw;
+ widget.destroy = destroy;
+
+ widget.needs_redraw = needs_redraw;
+ widget.state = LTK_NORMAL;
+ widget.row = 0;
+ widget.rect.x = 0;
+ widget.rect.y = 0;
+ widget.rect.w = 100;
+ widget.rect.h = 100;
+
+ widget.row = NULL;
+ widget.column = NULL;
+ widget.row_span = NULL;
+ widget.column_span = NULL;
+ widget.sticky = NULL;
+
+ return widget;
+}
+
+void ltk_mouse_press_event(void *widget, XEvent event)
+{
+ LtkWidget *ptr = widget;
+ if (!ptr || ptr->state == LTK_DISABLED) return;
+ if (event.xbutton.button == 1)
+ {
+ LtkWidget *parent = ptr->parent;
+ if (parent)
+ {
+ ltk_remove_active_widget(parent);
+ parent->active_widget = ptr;
+ }
+ ptr->state = LTK_PRESSED;
+ if (ptr->needs_redraw) ptr->draw(ptr);
+ }
+ if (ptr->mouse_press)
+ {
+ ptr->mouse_press(ptr, event);
+ }
+}
+
+void ltk_mouse_release_event(void *widget, XEvent event)
+{
+ LtkWidget *ptr = widget;
+ if (!ptr || ptr->state == LTK_DISABLED) return;
+ if (ptr->state == LTK_PRESSED)
+ {
+ ptr->state = LTK_HOVERACTIVE;
+ if (ptr->needs_redraw) ptr->draw(ptr);
+ }
+ if (ptr->mouse_release)
+ {
+ ptr->mouse_release(ptr, event);
+ }
+}
+
+void ltk_motion_notify_event(void *widget, XEvent event)
+{
+ LtkWidget *ptr = widget;
+ if (ptr && (ptr->state == LTK_NORMAL || ptr->state == LTK_ACTIVE) &&
+ (event.xmotion.state & Button1Mask) != Button1Mask)
+ {
+ ptr->state = ptr->state == LTK_ACTIVE ? LTK_HOVERACTIVE : LTK_HOVER;
+ LtkWidget *parent = ptr->parent;
+ if (parent)
+ {
+ ltk_remove_hover_widget(parent);
+ parent->hover_widget = ptr;
+ }
+ if (ptr->needs_redraw) ptr->draw(ptr);
+ }
+ if (ptr->motion_notify)
+ {
+ ptr->motion_notify(ptr, event);
+ }
+}
+
+void ltk_handle_event(XEvent event)
+{
+ LtkWindow *window;
+ LtkWidget *root_widget;
+ HASH_FIND_INT(ltk_global->window_hash, &event.xany.window, window);
+ if (!window) return;
+ root_widget = window->root_widget;
+ switch (event.type)
+ {
+ case KeyPress:
+ break;
+ case KeyRelease:
+ break;
+ case ButtonPress:
+ if (root_widget) ltk_mouse_press_event(root_widget, event);
+ break;
+ case ButtonRelease:
+ if (root_widget) ltk_mouse_release_event(root_widget, event);
+ break;
+ case MotionNotify:
+ if (root_widget) ltk_motion_notify_event(root_widget, event);
+ break;
+ default:
+ /* FIXME: users should be able to register other events like closing the window */
+ if (window->other_event)
+ window->other_event(window, event);
+ }
+}
+\ No newline at end of file
DIR diff --git a/ltk.h b/ltk.h
t@@ -30,11 +30,134 @@
#include <X11/Xutil.h>
#include "cJSON.h"
#include "uthash.h"
-#include "common.h"
-#include "window.h"
-#include "theme.h"
-#include "grid.h"
+
+/*
+ * Struct to represent a rectangle.
+ */
+typedef struct
+{
+ int x;
+ int y;
+ int w;
+ int h;
+} LtkRect;
+
+typedef enum {
+ LTK_STICKY_LEFT = 1 << 0,
+ LTK_STICKY_RIGHT = 1 << 1,
+ LTK_STICKY_TOP = 1 << 2,
+ LTK_STICKY_BOTTOM = 1 << 3
+} LtkStickyMask;
+
+/*
+ * An enumeration of all widget states.
+ */
+typedef enum
+{
+ LTK_NORMAL = 0,
+ LTK_HOVER = 1,
+ LTK_PRESSED = 2,
+ LTK_ACTIVE = 3,
+ LTK_HOVERACTIVE = 4,
+ LTK_DISABLED = 5
+} LtkWidgetState;
+
+typedef struct LtkWindow LtkWindow;
+
+/*
+ * A struct to contain all basic widget information.
+ * First element of every widget so the widget can
+ * be cast to LtkWidget.
+ */
+typedef struct LtkWidget
+{
+ /* The window the widget will be displayed on */
+ LtkWindow *window;
+ /* For container widgets; the widget that is currently active */
+ struct LtkWidget *active_widget;
+ /* For container widgets; the widget that is currently highlighted */
+ struct LtkWidget *hover_widget;
+ /* Parent widget */
+ struct LtkWidget *parent;
+
+ /* Called on KeyPress events */
+ void (*key_press)(void *, XEvent event);
+ /* Called on KeyRelease events */
+ void (*key_release)(void *, XEvent event);
+ /* Called on ButtonPress events */
+ void (*mouse_press)(void *, XEvent event);
+ /* Called on ButtonRelease event */
+ void (*mouse_release)(void *, XEvent event);
+ /* Called on MotionNotify events */
+ void (*motion_notify)(void *, XEvent event);
+
+ /* Function to update the widget after its LtkRect has been modified */
+ void (*resize)(void *);
+ /* Function to draw the widget */
+ void (*draw)(void *);
+ /* Function to destroy the widget */
+ void (*destroy)(void *);
+
+ /* Position and size of the widget */
+ LtkRect rect;
+ /* Row of widget if gridded */
+ unsigned int row;
+ /* Column of widget if gridded */
+ unsigned int column;
+ /* Row span of widget if gridded */
+ unsigned int row_span;
+ /* Column span of widget if gridded */
+ unsigned int column_span;
+ /* Specifies if the widget needs to be redrawn after a state change */
+ int needs_redraw : 1;
+ /* State of the widget */
+ LtkWidgetState state : 3;
+ /* Similar to sticky in tk */
+ unsigned short sticky : 4;
+} LtkWidget;
+
+/*
+ * Struct to represent a window.
+ */
+typedef struct LtkWindow
+{
+ Window xwindow;
+ GC gc;
+ void *root_widget;
+ void (*other_event)(void *, XEvent event);
+ LtkRect rect;
+ UT_hash_handle hh;
+} LtkWindow;
+
+/*
+ * Struct to represent the border width,
+ * foreground color, and background color
+ * of a window.
+ */
+typedef struct LtkWindowTheme
+{
+ int border_width;
+ XColor fg;
+ XColor bg;
+} LtkWindowTheme;
+
#include "button.h"
+#include "grid.h"
+
+/*
+ * Struct to contain all styles needed by LTK.
+ */
+typedef struct
+{
+ LtkWindowTheme *window;
+ LtkButtonTheme *button;
+} LtkTheme;
+
+/*
+ * Load a theme from a JSON file.
+ * path: The path to the file.
+ */
+LtkTheme *ltk_load_theme(const char *path);
/*
* Struct to contain all global information.
t@@ -80,4 +203,119 @@ XColor ltk_create_xcolor(const char *hex);
*/
void ltk_mainloop(void);
+/*
+ * Create a window.
+ * title: The title of the window.
+ * x: The x position of the window.
+ * y: The y position of the window.
+ * w: The width of the window.
+ * h: The height of the window.
+ */
+LtkWindow *ltk_create_window(const char *title, int x, int y, unsigned int w, unsigned int h);
+
+/*
+ * Redraw the widgets in a window.
+ * window: The window to redraw.
+ */
+void ltk_redraw_window(LtkWindow *window);
+
+/*
+ * Destroy a window and quit the application
+ * if no windows are left.
+ * window: The window to remove.
+ */
+void ltk_remove_window(LtkWindow *window);
+
+/*
+ * Destroy a window, freeing its memory.
+ * window: The window to destroy.
+ */
+void ltk_destroy_window(LtkWindow *window);
+
+/*
+ * Handles any event other than mouse or keyboard events.
+ * widget: Pointer to the window.
+ * event: The XEvent to be handled.
+ */
+void ltk_window_other_event(void *widget, XEvent event);
+
+/*
+ * Destroy an LtkTheme struct.
+ * theme: Pointer to the struct.
+ */
+void ltk_destroy_theme(LtkTheme *theme);
+
+/*
+ * Check if a rectangle collides with a point.
+ * rect: The rectangle.
+ * x: The x coordinate of the point.
+ * y: The y coordinate of the point.
+ */
+int ltk_collide_rect(LtkRect rect, int x, int y);
+
+/*
+ * Read a file and return a null-terminated string with the contents.
+ * path: The path to the file.
+ */
+char *ltk_read_file(const char *path);
+
+/*
+ * Recursively set the state of all active_widgets in 'widget' to 'state'.
+ */
+void ltk_change_active_widget_state(void *widget, LtkWidgetState state);
+
+/*
+ * Recursively set the state of all active_widgets in 'widget' to LTK_NORMAL,
+ * redraw the widgets, and remove the references to them from their parents.
+ */
+void ltk_remove_active_widget(void *widget);
+
+/*
+ * Recursively set the state of all hover_widgets in 'widget' to LTK_NORMAL or
+ * LTK_ACTIVE, redraw the widgets, and remove the references to them from their parents.
+ */
+void ltk_remove_hover_widget(void *widget);
+
+/*
+ * Create a widget.
+ * window: The window the widget is to be shown on.
+ * draw: The function used to draw the widget.
+ * destroy: The function used to destroy the widget.
+ * needs_redraw: Flag to indicate if the widget needs to be
+ * be redrawn when it is resized.
+ * Returns: The new LtkWidget.
+ */
+LtkWidget ltk_create_widget(LtkWindow *window, void (*draw)(void *), void (*destroy)(void *), int needs_redraw);
+
+/*
+ * Handles mouse press events for all widgets and calls
+ * specific widget handlers if set.
+ * widget: Pointer to the widget the mouse is currrently on.
+ * event: The event to be handled.
+ */
+void ltk_mouse_press_event(void *widget, XEvent event);
+
+/*
+ * Handles mouse release events for all widgets and calls
+ * specific widget handlers if set.
+ * widget: Pointer to the widget the mouse is currrently on.
+ * event: The event to be handled.
+ */
+void ltk_mouse_release_event(void *widget, XEvent event);
+
+/*
+ * Handles mouse motion events for all widgets and calls
+ * specific widget handlers if set.
+ * widget: Pointer to the widget the mouse is currrently on.
+ * event: The event to be handled.
+ */
+void ltk_motion_notify_event(void *widget, XEvent event);
+
+/*
+ * Handles all events and dispatches them to their
+ * respective handlers.
+ * event: The event to be handled.
+ */
+void ltk_handle_event(XEvent event);
+
#endif
DIR diff --git a/theme.c b/theme.c
t@@ -1,64 +0,0 @@
-/*
- * This file is part of the Lumidify ToolKit (LTK)
- * Copyright (c) 2016, 2017 Lumidify Productions <lumidify@openmailbox.org>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include "ltk.h"
-
-LtkTheme *ltk_load_theme(const char *path)
-{
- char *file_contents = ltk_read_file(path);
-
- cJSON *json = cJSON_Parse(file_contents);
- if (!json)
- {
- printf("Theme error before: [%s]\n", cJSON_GetErrorPtr());
- return NULL;
- }
- cJSON *button_json = cJSON_GetObjectItem(json, "button");
- if (!button_json)
- {
- printf("Theme error before: [%s]\n", cJSON_GetErrorPtr());
- return NULL;
- }
- cJSON *window_json = cJSON_GetObjectItem(json, "window");
- if (!window_json)
- {
- printf("Theme error before: [%s]\n", cJSON_GetErrorPtr());
- return NULL;
- }
-
- LtkTheme *theme = malloc(sizeof(LtkTheme));
- theme->button = ltk_parse_button_theme(button_json);
- theme->window = ltk_parse_window_theme(window_json);
-
- free(file_contents);
- cJSON_Delete(json);
-
- return theme;
-}
-
-void ltk_destroy_theme(LtkTheme *theme)
-{
- free(theme->button);
- free(theme->window);
- free(theme);
-}
DIR diff --git a/theme.h b/theme.h
t@@ -1,51 +0,0 @@
-/*
- * This file is part of the Lumidify ToolKit (LTK)
- * Copyright (c) 2016, 2017 Lumidify Productions <lumidify@openmailbox.org>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#ifndef _LTK_THEME_H_
-#define _LTK_THEME_H_
-
-typedef struct LtkWindowTheme LtkWindowTheme;
-typedef struct LtkButtonTheme LtkButtonTheme;
-
-/*
- * Struct to contain all styles needed by LTK.
- */
-typedef struct
-{
- LtkWindowTheme *window;
- LtkButtonTheme *button;
-} LtkTheme;
-
-/*
- * Load a theme from a JSON file.
- * path: The path to the file.
- */
-LtkTheme *ltk_load_theme(const char *path);
-
-/*
- * Destroy an LtkTheme struct.
- * theme: Pointer to the struct.
- */
-void ltk_destroy_theme(LtkTheme *theme);
-
-#endif
DIR diff --git a/window.c b/window.c
t@@ -1,153 +0,0 @@
-/*
- * This file is part of the Lumidify ToolKit (LTK)
- * Copyright (c) 2016, 2017 Lumidify Productions <lumidify@openmailbox.org>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include "ltk.h"
-
-LtkWindowTheme *ltk_parse_window_theme(cJSON *window_json)
-{
- LtkWindowTheme *window_theme = malloc(sizeof(LtkWindowTheme));
- if (!window_theme) ltk_fatal("No memory for new LtkWindowTheme\n");
- cJSON *border_width = cJSON_GetObjectItem(window_json, "border-width");
- cJSON *fg = cJSON_GetObjectItem(window_json, "foreground");
- cJSON *bg = cJSON_GetObjectItem(window_json, "background");
- window_theme->border_width = border_width ? border_width->valueint : 0;
- window_theme->fg = ltk_create_xcolor(fg->valuestring);
- window_theme->bg = ltk_create_xcolor(bg->valuestring);
-
- return window_theme;
-}
-
-void ltk_redraw_window(LtkWindow *window)
-{
- LtkWidget *ptr;
- if (!window)
- {
- return;
- }
- if (!window->root_widget)
- {
- return;
- }
- ptr = window->root_widget;
- ptr->draw(ptr);
-}
-
-LtkWindow *ltk_create_window(const char *title, int x, int y, unsigned int w, unsigned int h)
-{
- LtkWindow *window = malloc(sizeof(LtkWindow));
- if (!window) ltk_fatal("Not enough memory left for window!\n");
- LtkWindowTheme *wtheme = ltk_global->theme->window; /* For convenience */
- Display *display = ltk_global->display; /* For convenience */
- window->xwindow = XCreateSimpleWindow(display, DefaultRootWindow(display), x, y, w, h, wtheme->border_width, wtheme->fg.pixel, wtheme->bg.pixel);
- window->gc = XCreateGC(display, window->xwindow, 0, 0);
- XSetForeground(display, window->gc, wtheme->fg.pixel);
- XSetBackground(display, window->gc, wtheme->bg.pixel);
- XSetStandardProperties(display, window->xwindow, title, NULL, None, NULL, 0, NULL);
- XSetWMProtocols(display, window->xwindow, <k_global->wm_delete_msg, 1);
- window->root_widget = NULL;
-
- window->other_event = <k_window_other_event;
-
- window->rect.w = 0;
- window->rect.h = 0;
- window->rect.x = 0;
- window->rect.y = 0;
-
- XClearWindow(display, window->xwindow);
- XMapRaised(display, window->xwindow);
- XSelectInput(display, window->xwindow, ExposureMask|KeyPressMask|KeyReleaseMask|ButtonPressMask|ButtonReleaseMask|StructureNotifyMask|PointerMotionMask);
-
- HASH_ADD_INT(ltk_global->window_hash, xwindow, window);
-
- return window;
-}
-
-void ltk_remove_window(LtkWindow *window)
-{
- ltk_destroy_window(window);
- if (!ltk_global->window_hash) ltk_quit();
-}
-
-void ltk_destroy_window(LtkWindow *window)
-{
- HASH_DEL(ltk_global->window_hash, window);
- LtkWidget *ptr = window->root_widget;
- if (ptr) ptr->destroy(ptr);
- XDestroyWindow(ltk_global->display, window->xwindow);
- free(window);
-}
-
-void ltk_window_other_event(void *widget, XEvent event)
-{
- LtkWindow *window = widget;
- LtkWidget *ptr = window->root_widget;
- if (event.type == ConfigureNotify)
- {
- unsigned int w, h;
- w = event.xconfigure.width;
- h = event.xconfigure.height;
- if (ptr && ptr->resize && (window->rect.w != w || window->rect.h != h))
- {
- window->rect.w = w;
- window->rect.h = h;
- ptr->rect.w = w;
- ptr->rect.h = h;
- ptr->resize(ptr);
- ltk_redraw_window(window);
- }
- }
- if (event.type == Expose && event.xexpose.count == 0)
- {
- ltk_redraw_window(window);
- }
- if (event.type == ClientMessage && event.xclient.data.l[0] == ltk_global->wm_delete_msg)
- {
- ltk_remove_window(window);
- }
-}
-
-/*
-void ltk_resize_window(Uint32 id, int w, int h)
-{
- LtkWindow *window;
- LtkWidget *ptr;
- HASH_FIND_INT(ltk_window_hash, &id, window);
- if (!window)
- {
- return;
- }
- ptr = window->root_widget;
- if (!ptr)
- {
- return;
- }
- ptr->rect.w = w;
- ptr->rect.h = h;
- ptr->resize(ptr);
-}
-
-void ltk_window_set_root_widget(LtkWindow *window, void *root_widget)
-{
- window->root_widget = root_widget;
-}
-*/
DIR diff --git a/window.h b/window.h
t@@ -1,54 +0,0 @@
-/*
- * This file is part of the Lumidify ToolKit (LTK)
- * Copyright (c) 2016, 2017 Lumidify Productions <lumidify@openmailbox.org>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#ifndef _LTK_WINDOW_H_
-#define _LTK_WINDOW_H_
-
-#include <X11/Xlib.h>
-#include "event.h"
-
-typedef struct LtkWindow
-{
- Window xwindow;
- GC gc;
- void *root_widget;
- void (*other_event)(void *, XEvent event);
- LtkRect rect;
- UT_hash_handle hh;
-} LtkWindow;
-
-typedef struct LtkWindowTheme
-{
- int border_width;
- XColor fg;
- XColor bg;
-} LtkWindowTheme;
-
-LtkWindow *ltk_create_window(const char *title, int x, int y, unsigned int w, unsigned int h);
-void ltk_redraw_window(LtkWindow *window);
-void ltk_destroy_window(LtkWindow *window);
-void ltk_window_key_event(void *widget, XEvent event);
-void ltk_window_mouse_event(void *widget, XEvent event);
-void ltk_window_other_event(void *widget, XEvent event);
-
-#endif